CanGc changes from fontfaceset.rs (#33920)

* CanGc changes from fontfaceset.rs

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* Update components/script/dom/bindings/codegen/Bindings.conf

Co-authored-by: Josh Matthews <josh@joshmatthews.net>
Signed-off-by: chickenleaf <lashwinib@gmail.com>

---------

Signed-off-by: L Ashwin B <lashwinib@gmail.com>
Signed-off-by: chickenleaf <lashwinib@gmail.com>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>

32 files changed, 425 insertions, 274 deletions

diff --git a/components/script/canvas_state.rs b/components/script/canvas_state.rs
index b426c2a1551..0d5e934a5e4 100644
--- a/components/script/canvas_state.rs
+++ b/components/script/canvas_state.rs
@@ -737,8 +737,13 @@ impl CanvasState {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowcolor
-    pub fn set_shadow_color(&self, canvas: Option<&HTMLCanvasElement>, value: DOMString) {
-        if let Ok(rgba) = parse_color(canvas, &value) {
+    pub fn set_shadow_color(
+        &self,
+        canvas: Option<&HTMLCanvasElement>,
+        value: DOMString,
+        can_gc: CanGc,
+    ) {
+        if let Ok(rgba) = parse_color(canvas, &value, can_gc) {
             self.state.borrow_mut().shadow_color = rgba;
             self.send_canvas_2d_msg(Canvas2dMsg::SetShadowColor(rgba))
         }
@@ -766,10 +771,11 @@ impl CanvasState {
         &self,
         canvas: Option<&HTMLCanvasElement>,
         value: StringOrCanvasGradientOrCanvasPattern,
+        can_gc: CanGc,
     ) {
         match value {
             StringOrCanvasGradientOrCanvasPattern::String(string) => {
-                if let Ok(rgba) = parse_color(canvas, &string) {
+                if let Ok(rgba) = parse_color(canvas, &string, can_gc) {
                     self.state.borrow_mut().stroke_style = CanvasFillOrStrokeStyle::Color(rgba);
                 }
             },
@@ -809,10 +815,11 @@ impl CanvasState {
         &self,
         canvas: Option<&HTMLCanvasElement>,
         value: StringOrCanvasGradientOrCanvasPattern,
+        can_gc: CanGc,
     ) {
         match value {
             StringOrCanvasGradientOrCanvasPattern::String(string) => {
-                if let Ok(rgba) = parse_color(canvas, &string) {
+                if let Ok(rgba) = parse_color(canvas, &string, can_gc) {
                     self.state.borrow_mut().fill_style = CanvasFillOrStrokeStyle::Color(rgba);
                 }
             },
@@ -1002,6 +1009,7 @@ impl CanvasState {
         x: f64,
         y: f64,
         max_width: Option<f64>,
+        can_gc: CanGc,
     ) {
         if !x.is_finite() || !y.is_finite() {
             return;
@@ -1010,7 +1018,11 @@ impl CanvasState {
             return;
         }
         if self.state.borrow().font_style.is_none() {
-            self.set_font(canvas, CanvasContextState::DEFAULT_FONT_STYLE.into())
+            self.set_font(
+                canvas,
+                CanvasContextState::DEFAULT_FONT_STYLE.into(),
+                can_gc,
+            )
         }
 
         let is_rtl = match self.state.borrow().direction {
@@ -1036,9 +1048,14 @@ impl CanvasState {
         global: &GlobalScope,
         canvas: Option<&HTMLCanvasElement>,
         text: DOMString,
+        can_gc: CanGc,
     ) -> DomRoot<TextMetrics> {
         if self.state.borrow().font_style.is_none() {
-            self.set_font(canvas, CanvasContextState::DEFAULT_FONT_STYLE.into());
+            self.set_font(
+                canvas,
+                CanvasContextState::DEFAULT_FONT_STYLE.into(),
+                can_gc,
+            );
         }
 
         let (sender, receiver) = ipc::channel::<CanvasTextMetrics>().unwrap();
@@ -1063,17 +1080,18 @@ impl CanvasState {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-font
-    pub fn set_font(&self, canvas: Option<&HTMLCanvasElement>, value: DOMString) {
+    pub fn set_font(&self, canvas: Option<&HTMLCanvasElement>, value: DOMString, can_gc: CanGc) {
         let canvas = match canvas {
             Some(element) => element,
             None => return, // offscreen canvas doesn't have a placeholder canvas
         };
         let node = canvas.upcast::<Node>();
         let window = window_from_node(canvas);
-        let resolved_font_style = match window.resolved_font_style_query(node, value.to_string()) {
-            Some(value) => value,
-            None => return, // syntax error
-        };
+        let resolved_font_style =
+            match window.resolved_font_style_query(node, value.to_string(), can_gc) {
+                Some(value) => value,
+                None => return, // syntax error
+            };
         self.state.borrow_mut().font_style = Some((*resolved_font_style).clone());
         self.send_canvas_2d_msg(Canvas2dMsg::SetFont((*resolved_font_style).clone()));
     }
@@ -1717,7 +1735,11 @@ impl CanvasState {
     }
 }
 
-pub fn parse_color(canvas: Option<&HTMLCanvasElement>, string: &str) -> Result<AbsoluteColor, ()> {
+pub fn parse_color(
+    canvas: Option<&HTMLCanvasElement>,
+    string: &str,
+    can_gc: CanGc,
+) -> Result<AbsoluteColor, ()> {
     let mut input = ParserInput::new(string);
     let mut parser = Parser::new(&mut input);
     let url = Url::parse("about:blank").unwrap().into();
@@ -1745,8 +1767,8 @@ pub fn parse_color(canvas: Option<&HTMLCanvasElement>, string: &str) -> Result<A
                 None => AbsoluteColor::BLACK,
                 Some(canvas) => {
                     let canvas_element = canvas.upcast::<Element>();
-                    match canvas_element.style() {
-                        Some(ref s) if canvas_element.has_css_layout_box() => {
+                    match canvas_element.style(can_gc) {
+                        Some(ref s) if canvas_element.has_css_layout_box(can_gc) => {
                             s.get_inherited_text().color
                         },
                         _ => AbsoluteColor::BLACK,
diff --git a/components/script/devtools.rs b/components/script/devtools.rs
index 95f4a245ce4..e02d413caf1 100644
--- a/components/script/devtools.rs
+++ b/components/script/devtools.rs
@@ -354,7 +354,7 @@ pub fn handle_get_layout(
             position: String::from(computed_style.Position()),
             z_index: String::from(computed_style.ZIndex()),
             box_sizing: String::from(computed_style.BoxSizing()),
-            auto_margins: determine_auto_margins(&node),
+            auto_margins: determine_auto_margins(&node, can_gc),
             margin_top: String::from(computed_style.MarginTop()),
             margin_right: String::from(computed_style.MarginRight()),
             margin_bottom: String::from(computed_style.MarginBottom()),
@@ -373,8 +373,8 @@ pub fn handle_get_layout(
         .unwrap();
 }
 
-fn determine_auto_margins(node: &Node) -> AutoMargins {
-    let style = node.style().unwrap();
+fn determine_auto_margins(node: &Node, can_gc: CanGc) -> AutoMargins {
+    let style = node.style(can_gc).unwrap();
     let margin = style.get_margin();
     AutoMargins {
         top: margin.margin_top.is_auto(),
diff --git a/components/script/dom/activation.rs b/components/script/dom/activation.rs
index 796bb5b0381..8f325fb4e89 100644
--- a/components/script/dom/activation.rs
+++ b/components/script/dom/activation.rs
@@ -37,13 +37,21 @@ pub trait Activatable {
         self.as_element().set_active_state(true);
 
         let win = window_from_node(self.as_element());
-        win.reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
+        win.reflow(
+            ReflowGoal::Full,
+            ReflowReason::ElementStateChanged,
+            CanGc::note(),
+        );
     }
 
     fn exit_formal_activation_state(&self) {
         self.as_element().set_active_state(false);
 
         let win = window_from_node(self.as_element());
-        win.reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
+        win.reflow(
+            ReflowGoal::Full,
+            ReflowReason::ElementStateChanged,
+            CanGc::note(),
+        );
     }
 }
diff --git a/components/script/dom/bindings/codegen/Bindings.conf b/components/script/dom/bindings/codegen/Bindings.conf
index 3ea8afe6d45..896cf1f0314 100644
--- a/components/script/dom/bindings/codegen/Bindings.conf
+++ b/components/script/dom/bindings/codegen/Bindings.conf
@@ -58,7 +58,11 @@ DOMInterfaces = {
 },
 
 'CanvasRenderingContext2D': {
-    'canGc': ['GetTransform','GetImageData', 'CreateImageData', 'CreateImageData_'],
+    'canGc': ['GetTransform','GetImageData', 'CreateImageData', 'CreateImageData_', 'SetFont', 'FillText', 'MeasureText', 'SetStrokeStyle', 'SetFillStyle', 'SetShadowColor'],
+},
+
+'CanvasGradient': {
+    'canGc': ['AddColorStop'],
 },
 
 'DOMImplementation': {
@@ -90,7 +94,7 @@ DOMInterfaces = {
 },
 
 'Document': {
-    'canGc': ['Close', 'CreateElement', 'CreateElementNS', 'ImportNode', 'SetTitle', 'Write', 'Writeln', 'CreateEvent', 'CreateRange', 'Open', 'Open_'],
+    'canGc': ['Close', 'CreateElement', 'CreateElementNS', 'ImportNode', 'SetTitle', 'Write', 'Writeln', 'CreateEvent', 'CreateRange', 'Open', 'Open_', 'Fonts', 'ElementFromPoint', 'ElementsFromPoint'],
 },
 
 'DynamicModuleOwner': {
@@ -98,7 +102,7 @@ DOMInterfaces = {
 },
 
 'Element': {
-    'canGc': ['SetInnerHTML', 'SetOuterHTML', 'InsertAdjacentHTML', 'GetClientRects', 'GetBoundingClientRect'],
+    'canGc': ['SetInnerHTML', 'SetOuterHTML', 'InsertAdjacentHTML', 'GetClientRects', 'GetBoundingClientRect', 'SetScrollTop', 'SetScrollLeft', 'Scroll', 'Scroll_', 'ScrollBy', 'ScrollBy_', 'ScrollWidth', 'ScrollHeight', 'ScrollTop', 'ScrollLeft', 'ClientTop', 'ClientLeft', 'ClientWidth', 'ClientHeight'],
 },
 
 'ElementInternals': {
@@ -192,6 +196,14 @@ DOMInterfaces = {
     'canGc': ['Content'],
 },
 
+'HTMLElement': {
+    'canGc': ['GetOffsetParent', 'OffsetTop', 'OffsetLeft', 'OffsetWidth', 'OffsetHeight', 'InnerText', 'GetOuterText', 'Focus', 'Blur', 'Click'],
+},
+
+'HTMLImageElement': {
+    'canGc': ['Width', 'Height'],
+},
+
 'HTMLTextAreaElement': {
     'canGc': ['ReportValidity'],
 },
@@ -213,6 +225,9 @@ DOMInterfaces = {
     'canGc': ['GetMetadata'],
 },
 
+'MouseEvent': {
+    'canGc': ['OffsetX', 'OffsetY'],
+},
 
 'MediaQueryList': {
     'weakReferenceable': True,
@@ -239,11 +254,11 @@ DOMInterfaces = {
 },
 
 'OffscreenCanvasRenderingContext2D': {
-    'canGc': ['CreateImageData', 'CreateImageData_', 'GetImageData', 'GetTransform'],
+    'canGc': ['CreateImageData', 'CreateImageData_', 'GetImageData', 'GetTransform', 'SetFont', 'FillText', 'MeasureText', 'SetStrokeStyle', 'SetFillStyle', 'SetShadowColor'],
 },
 
 'PaintRenderingContext2D': {
-    'canGc': ['GetTransform'],
+    'canGc': ['GetTransform', 'SetStrokeStyle', 'SetFillStyle', 'SetShadowColor'],
 },
 
 'Promise': {
@@ -272,7 +287,6 @@ DOMInterfaces = {
     'canGc': ['Collapse', 'CollapseToEnd', 'CollapseToStart', 'Extend', 'SelectAllChildren', 'SetBaseAndExtent', 'SetPosition'],
 },
 
-
 'ServiceWorkerContainer': {
     'inRealms': ['Register'],
 },
@@ -281,6 +295,10 @@ DOMInterfaces = {
     'weakReferenceable': True,
 },
 
+'ShadowRoot': {
+    'canGc': ['ElementFromPoint', 'ElementsFromPoint'],
+},
+
 'SubtleCrypto': {
     'inRealms': ['Encrypt', 'Decrypt', 'GenerateKey', 'ImportKey', 'ExportKey']
 },
@@ -305,7 +323,7 @@ DOMInterfaces = {
 },
 
 'Window': {
-    'canGc': ['Stop', 'Fetch', 'Open'],
+    'canGc': ['Stop', 'Fetch', 'Scroll', 'Scroll_','ScrollBy', 'ScrollBy_', 'Stop', 'Fetch', 'Open'],
     'inRealms': ['Fetch', 'GetOpener'],
 },
 
diff --git a/components/script/dom/canvasgradient.rs b/components/script/dom/canvasgradient.rs
index 20791998951..f1317dd0a90 100644
--- a/components/script/dom/canvasgradient.rs
+++ b/components/script/dom/canvasgradient.rs
@@ -16,6 +16,7 @@ use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
 use crate::dom::bindings::root::DomRoot;
 use crate::dom::bindings::str::DOMString;
 use crate::dom::globalscope::GlobalScope;
+use crate::script_runtime::CanGc;
 
 // https://html.spec.whatwg.org/multipage/#canvasgradient
 #[dom_struct]
@@ -48,12 +49,12 @@ impl CanvasGradient {
 
 impl CanvasGradientMethods for CanvasGradient {
     // https://html.spec.whatwg.org/multipage/#dom-canvasgradient-addcolorstop
-    fn AddColorStop(&self, offset: Finite<f64>, color: DOMString) -> ErrorResult {
+    fn AddColorStop(&self, offset: Finite<f64>, color: DOMString, can_gc: CanGc) -> ErrorResult {
         if *offset < 0f64 || *offset > 1f64 {
             return Err(Error::IndexSize);
         }
 
-        let color = match parse_color(None, &color) {
+        let color = match parse_color(None, &color, can_gc) {
             Ok(color) => color,
             Err(_) => return Err(Error::Syntax),
         };
diff --git a/components/script/dom/canvasrenderingcontext2d.rs b/components/script/dom/canvasrenderingcontext2d.rs
index 1f3420457fb..bc131b94eab 100644
--- a/components/script/dom/canvasrenderingcontext2d.rs
+++ b/components/script/dom/canvasrenderingcontext2d.rs
@@ -285,16 +285,16 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-filltext
-    fn FillText(&self, text: DOMString, x: f64, y: f64, max_width: Option<f64>) {
+    fn FillText(&self, text: DOMString, x: f64, y: f64, max_width: Option<f64>, can_gc: CanGc) {
         self.canvas_state
-            .fill_text(self.canvas.as_deref(), text, x, y, max_width);
+            .fill_text(self.canvas.as_deref(), text, x, y, max_width, can_gc);
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#textmetrics
-    fn MeasureText(&self, text: DOMString) -> DomRoot<TextMetrics> {
+    fn MeasureText(&self, text: DOMString, can_gc: CanGc) -> DomRoot<TextMetrics> {
         self.canvas_state
-            .measure_text(&self.global(), self.canvas.as_deref(), text)
+            .measure_text(&self.global(), self.canvas.as_deref(), text, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-font
@@ -303,8 +303,9 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-font
-    fn SetFont(&self, value: DOMString) {
-        self.canvas_state.set_font(self.canvas.as_deref(), value)
+    fn SetFont(&self, value: DOMString, can_gc: CanGc) {
+        self.canvas_state
+            .set_font(self.canvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-textalign
@@ -451,9 +452,9 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
-    fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
+    fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern, can_gc: CanGc) {
         self.canvas_state
-            .set_stroke_style(self.canvas.as_deref(), value)
+            .set_stroke_style(self.canvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
@@ -462,9 +463,9 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
-    fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
+    fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern, can_gc: CanGc) {
         self.canvas_state
-            .set_fill_style(self.canvas.as_deref(), value)
+            .set_fill_style(self.canvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-createimagedata
@@ -656,9 +657,9 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowcolor
-    fn SetShadowColor(&self, value: DOMString) {
+    fn SetShadowColor(&self, value: DOMString, can_gc: CanGc) {
         self.canvas_state
-            .set_shadow_color(self.canvas.as_deref(), value)
+            .set_shadow_color(self.canvas.as_deref(), value, can_gc)
     }
 }
 
diff --git a/components/script/dom/cssstyledeclaration.rs b/components/script/dom/cssstyledeclaration.rs
index b6efaa7f6c3..e660f15166f 100644
--- a/components/script/dom/cssstyledeclaration.rs
+++ b/components/script/dom/cssstyledeclaration.rs
@@ -30,6 +30,7 @@ use crate::dom::cssrule::CSSRule;
 use crate::dom::element::Element;
 use crate::dom::node::{document_from_node, stylesheets_owner_from_node, window_from_node, Node};
 use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
 
 // http://dev.w3.org/csswg/cssom/#the-cssstyledeclaration-interface
 #[dom_struct]
@@ -245,7 +246,7 @@ impl CSSStyleDeclaration {
         )
     }
 
-    fn get_computed_style(&self, property: PropertyId) -> DOMString {
+    fn get_computed_style(&self, property: PropertyId, can_gc: CanGc) -> DOMString {
         match self.owner {
             CSSStyleOwner::CSSRule(..) => {
                 panic!("get_computed_style called on CSSStyleDeclaration with a CSSRule owner")
@@ -256,7 +257,7 @@ impl CSSStyleDeclaration {
                     return DOMString::new();
                 }
                 let addr = node.to_trusted_node_address();
-                window_from_node(node).resolved_style_query(addr, self.pseudo, property)
+                window_from_node(node).resolved_style_query(addr, self.pseudo, property, can_gc)
             },
         }
     }
@@ -264,7 +265,7 @@ impl CSSStyleDeclaration {
     fn get_property_value(&self, id: PropertyId) -> DOMString {
         if self.readonly {
             // Readonly style declarations are used for getComputedStyle.
-            return self.get_computed_style(id);
+            return self.get_computed_style(id, CanGc::note());
         }
 
         let mut string = String::new();
diff --git a/components/script/dom/document.rs b/components/script/dom/document.rs
index 25074c1e965..189352c35ce 100644
--- a/components/script/dom/document.rs
+++ b/components/script/dom/document.rs
@@ -694,7 +694,7 @@ impl Document {
         self.activity.get() != DocumentActivity::Inactive
     }
 
-    pub fn set_activity(&self, activity: DocumentActivity) {
+    pub fn set_activity(&self, activity: DocumentActivity, can_gc: CanGc) {
         // This function should only be called on documents with a browsing context
         assert!(self.has_browsing_context);
         if activity == self.activity.get() {
@@ -716,8 +716,11 @@ impl Document {
 
         self.title_changed();
         self.dirty_all_nodes();
-        self.window()
-            .reflow(ReflowGoal::Full, ReflowReason::CachedPageNeededReflow);
+        self.window().reflow(
+            ReflowGoal::Full,
+            ReflowReason::CachedPageNeededReflow,
+            can_gc,
+        );
         self.window().resume();
         media.resume(&client_context_id);
 
@@ -906,7 +909,7 @@ impl Document {
     }
 
     /// Reflows and disarms the timer if the reflow timer has expired.
-    pub fn reflow_if_reflow_timer_expired(&self) {
+    pub fn reflow_if_reflow_timer_expired(&self, can_gc: CanGc) {
         let Some(reflow_timeout) = self.reflow_timeout.get() else {
             return;
         };
@@ -917,7 +920,7 @@ impl Document {
 
         self.reflow_timeout.set(None);
         self.window
-            .reflow(ReflowGoal::Full, ReflowReason::RefreshTick);
+            .reflow(ReflowGoal::Full, ReflowReason::RefreshTick, can_gc);
     }
 
     /// Schedules a reflow to be kicked off at the given [`Duration`] in the future. This reflow
@@ -1019,11 +1022,11 @@ impl Document {
     /// Scroll to the target element, and when we do not find a target
     /// and the fragment is empty or "top", scroll to the top.
     /// <https://html.spec.whatwg.org/multipage/#scroll-to-the-fragment-identifier>
-    pub fn check_and_scroll_fragment(&self, fragment: &str) {
+    pub fn check_and_scroll_fragment(&self, fragment: &str, can_gc: CanGc) {
         let target = self.find_fragment_node(fragment);
 
         // Step 1
-        self.set_target_element(target.as_deref());
+        self.set_target_element(target.as_deref(), can_gc);
 
         let point = target
             .as_ref()
@@ -1032,7 +1035,9 @@ impl Document {
                 // inside other scrollable containers. Ideally this should use an implementation of
                 // `scrollIntoView` when that is available:
                 // See https://github.com/servo/servo/issues/24059.
-                let rect = element.upcast::<Node>().bounding_content_box_or_zero();
+                let rect = element
+                    .upcast::<Node>()
+                    .bounding_content_box_or_zero(can_gc);
 
                 // In order to align with element edges, we snap to unscaled pixel boundaries, since
                 // the paint thread currently does the same for drawing elements. This is important
@@ -1056,7 +1061,7 @@ impl Document {
 
         if let Some((x, y)) = point {
             self.window
-                .scroll(x as f64, y as f64, ScrollBehavior::Instant)
+                .scroll(x as f64, y as f64, ScrollBehavior::Instant, can_gc)
         }
     }
 
@@ -1188,7 +1193,7 @@ impl Document {
 
             // Notify the embedder to display an input method.
             if let Some(kind) = elem.input_method_type() {
-                let rect = elem.upcast::<Node>().bounding_content_box_or_zero();
+                let rect = elem.upcast::<Node>().bounding_content_box_or_zero(can_gc);
                 let rect = Rect::new(
                     Point2D::new(rect.origin.x.to_px(), rect.origin.y.to_px()),
                     Size2D::new(rect.size.width.to_px(), rect.size.height.to_px()),
@@ -2088,7 +2093,7 @@ impl Document {
     }
 
     /// <https://html.spec.whatwg.org/multipage/#run-the-animation-frame-callbacks>
-    pub fn run_the_animation_frame_callbacks(&self) {
+    pub fn run_the_animation_frame_callbacks(&self, can_gc: CanGc) {
         rooted_vec!(let mut animation_frame_list);
         mem::swap(
             &mut *animation_frame_list,
@@ -2107,9 +2112,11 @@ impl Document {
 
         self.running_animation_callbacks.set(false);
 
-        let spurious = !self
-            .window
-            .reflow(ReflowGoal::Full, ReflowReason::RequestAnimationFrame);
+        let spurious = !self.window.reflow(
+            ReflowGoal::Full,
+            ReflowReason::RequestAnimationFrame,
+            can_gc,
+        );
 
         if spurious && !was_faking_animation_frames {
             // If the rAF callbacks did not mutate the DOM, then the
@@ -2239,7 +2246,7 @@ impl Document {
                     self.reflow_timeout.set(None);
                     self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
                     self.window
-                        .reflow(ReflowGoal::Full, ReflowReason::FirstLoad);
+                        .reflow(ReflowGoal::Full, ReflowReason::FirstLoad, can_gc);
                 }
 
                 // Deferred scripts have to wait for page to finish loading,
@@ -2471,7 +2478,7 @@ impl Document {
                     update_with_current_instant(&document.load_event_end);
 
                     if let Some(fragment) = document.url().fragment() {
-                        document.check_and_scroll_fragment(fragment);
+                        document.check_and_scroll_fragment(fragment, CanGc::note());
                     }
                 }),
                 self.window.upcast(),
@@ -3048,12 +3055,14 @@ impl Document {
     pub(crate) fn gather_active_resize_observations_at_depth(
         &self,
         depth: &ResizeObservationDepth,
+        can_gc: CanGc,
     ) -> bool {
         let mut has_active_resize_observations = false;
         for observer in self.resize_observers.borrow_mut().iter_mut() {
             observer.gather_active_resize_observations_at_depth(
                 depth,
                 &mut has_active_resize_observations,
+                can_gc,
             );
         }
         has_active_resize_observations
@@ -3444,10 +3453,10 @@ impl Document {
     }
 
     /// As part of a `update_the_rendering` task, tick all pending animations.
-    pub fn tick_all_animations(&self, should_run_rafs: bool) {
+    pub fn tick_all_animations(&self, should_run_rafs: bool, can_gc: CanGc) {
         let tick_type = mem::take(&mut *self.pending_animation_ticks.borrow_mut());
         if should_run_rafs {
-            self.run_the_animation_frame_callbacks();
+            self.run_the_animation_frame_callbacks(can_gc);
         }
         if tick_type.contains(AnimationTickType::CSS_ANIMATIONS_AND_TRANSITIONS) {
             self.maybe_mark_animating_nodes_as_dirty();
@@ -3839,7 +3848,7 @@ impl Document {
         self.referrer_policy.get()
     }
 
-    pub fn set_target_element(&self, node: Option<&Element>) {
+    pub fn set_target_element(&self, node: Option<&Element>, can_gc: CanGc) {
         if let Some(ref element) = self.target_element.get() {
             element.set_target_state(false);
         }
@@ -3851,7 +3860,7 @@ impl Document {
         }
 
         self.window
-            .reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
+            .reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged, can_gc);
     }
 
     pub fn incr_ignore_destructive_writes_counter(&self) {
@@ -5280,22 +5289,34 @@ impl DocumentMethods for Document {
     );
 
     // https://drafts.csswg.org/cssom-view/#dom-document-elementfrompoint
-    fn ElementFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Option<DomRoot<Element>> {
+    fn ElementFromPoint(
+        &self,
+        x: Finite<f64>,
+        y: Finite<f64>,
+        can_gc: CanGc,
+    ) -> Option<DomRoot<Element>> {
         self.document_or_shadow_root.element_from_point(
             x,
             y,
             self.GetDocumentElement(),
             self.has_browsing_context,
+            can_gc,
         )
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-document-elementsfrompoint
-    fn ElementsFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Vec<DomRoot<Element>> {
+    fn ElementsFromPoint(
+        &self,
+        x: Finite<f64>,
+        y: Finite<f64>,
+        can_gc: CanGc,
+    ) -> Vec<DomRoot<Element>> {
         self.document_or_shadow_root.elements_from_point(
             x,
             y,
             self.GetDocumentElement(),
             self.has_browsing_context,
+            can_gc,
         )
     }
 
@@ -5560,9 +5581,9 @@ impl DocumentMethods for Document {
     }
 
     // https://drafts.csswg.org/css-font-loading/#font-face-source
-    fn Fonts(&self) -> DomRoot<FontFaceSet> {
+    fn Fonts(&self, can_gc: CanGc) -> DomRoot<FontFaceSet> {
         self.fonts
-            .or_init(|| FontFaceSet::new(&self.global(), None))
+            .or_init(|| FontFaceSet::new(&self.global(), None, can_gc))
     }
 
     /// <https://html.spec.whatwg.org/multipage/#dom-document-hidden>
@@ -5625,9 +5646,9 @@ pub struct FakeRequestAnimationFrameCallback {
 }
 
 impl FakeRequestAnimationFrameCallback {
-    pub fn invoke(self) {
+    pub fn invoke(self, can_gc: CanGc) {
         let document = self.document.root();
-        document.run_the_animation_frame_callbacks();
+        document.run_the_animation_frame_callbacks(can_gc);
     }
 }
 
diff --git a/components/script/dom/documentorshadowroot.rs b/components/script/dom/documentorshadowroot.rs
index e3eb4a34de1..7e9e58fe3a3 100644
--- a/components/script/dom/documentorshadowroot.rs
+++ b/components/script/dom/documentorshadowroot.rs
@@ -25,6 +25,7 @@ use crate::dom::element::Element;
 use crate::dom::htmlelement::HTMLElement;
 use crate::dom::node::{self, Node, VecPreOrderInsertionHelper};
 use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
 use crate::stylesheet_set::StylesheetSetRef;
 
 #[derive(Clone, JSTraceable, MallocSizeOf)]
@@ -90,8 +91,12 @@ impl DocumentOrShadowRoot {
         &self,
         client_point: &Point2D<f32>,
         query_type: NodesFromPointQueryType,
+        can_gc: CanGc,
     ) -> Vec<UntrustedNodeAddress> {
-        if !self.window.layout_reflow(QueryMsg::NodesFromPointQuery) {
+        if !self
+            .window
+            .layout_reflow(QueryMsg::NodesFromPointQuery, can_gc)
+        {
             return vec![];
         };
 
@@ -108,6 +113,7 @@ impl DocumentOrShadowRoot {
         y: Finite<f64>,
         document_element: Option<DomRoot<Element>>,
         has_browsing_context: bool,
+        can_gc: CanGc,
     ) -> Option<DomRoot<Element>> {
         let x = *x as f32;
         let y = *y as f32;
@@ -123,7 +129,7 @@ impl DocumentOrShadowRoot {
         }
 
         match self
-            .nodes_from_point(point, NodesFromPointQueryType::Topmost)
+            .nodes_from_point(point, NodesFromPointQueryType::Topmost, can_gc)
             .first()
         {
             Some(address) => {
@@ -147,6 +153,7 @@ impl DocumentOrShadowRoot {
         y: Finite<f64>,
         document_element: Option<DomRoot<Element>>,
         has_browsing_context: bool,
+        can_gc: CanGc,
     ) -> Vec<DomRoot<Element>> {
         let x = *x as f32;
         let y = *y as f32;
@@ -163,7 +170,7 @@ impl DocumentOrShadowRoot {
         }
 
         // Step 1 and Step 3
-        let nodes = self.nodes_from_point(point, NodesFromPointQueryType::All);
+        let nodes = self.nodes_from_point(point, NodesFromPointQueryType::All, can_gc);
         let mut elements: Vec<DomRoot<Element>> = nodes
             .iter()
             .flat_map(|&untrusted_node_address| {
diff --git a/components/script/dom/element.rs b/components/script/dom/element.rs
index 1a429b540b5..2bb4e0b86c0 100644
--- a/components/script/dom/element.rs
+++ b/components/script/dom/element.rs
@@ -423,18 +423,18 @@ impl Element {
 
     /// style will be `None` for elements in a `display: none` subtree. otherwise, the element has a
     /// layout box iff it doesn't have `display: none`.
-    pub fn style(&self) -> Option<Arc<ComputedValues>> {
-        self.upcast::<Node>().style()
+    pub fn style(&self, can_gc: CanGc) -> Option<Arc<ComputedValues>> {
+        self.upcast::<Node>().style(can_gc)
     }
 
     // https://drafts.csswg.org/cssom-view/#css-layout-box
-    pub fn has_css_layout_box(&self) -> bool {
-        self.style()
+    pub fn has_css_layout_box(&self, can_gc: CanGc) -> bool {
+        self.style(can_gc)
             .is_some_and(|s| !s.get_box().clone_display().is_none())
     }
 
     // https://drafts.csswg.org/cssom-view/#potentially-scrollable
-    fn is_potentially_scrollable_body(&self) -> bool {
+    fn is_potentially_scrollable_body(&self, can_gc: CanGc) -> bool {
         let node = self.upcast::<Node>();
         debug_assert!(
             node.owner_doc().GetBody().as_deref() == self.downcast::<HTMLElement>(),
@@ -444,14 +444,14 @@ impl Element {
         // "An element body (which will be the body element) is potentially
         // scrollable if all of the following conditions are true:
         //  - body has an associated box."
-        if !self.has_css_layout_box() {
+        if !self.has_css_layout_box(can_gc) {
             return false;
         }
 
         // " - body’s parent element’s computed value of the overflow-x or
         //     overflow-y properties is neither visible nor clip."
         if let Some(parent) = node.GetParentElement() {
-            if let Some(style) = parent.style() {
+            if let Some(style) = parent.style(can_gc) {
                 if !style.get_box().clone_overflow_x().is_scrollable() &&
                     !style.get_box().clone_overflow_y().is_scrollable()
                 {
@@ -462,7 +462,7 @@ impl Element {
 
         // " - body’s computed value of the overflow-x or overflow-y properties
         //     is neither visible nor clip."
-        if let Some(style) = self.style() {
+        if let Some(style) = self.style(can_gc) {
             if !style.get_box().clone_overflow_x().is_scrollable() &&
                 !style.get_box().clone_overflow_y().is_scrollable()
             {
@@ -474,17 +474,18 @@ impl Element {
     }
 
     // https://drafts.csswg.org/cssom-view/#scrolling-box
-    fn has_scrolling_box(&self) -> bool {
+    fn has_scrolling_box(&self, can_gc: CanGc) -> bool {
         // TODO: scrolling mechanism, such as scrollbar (We don't have scrollbar yet)
         //       self.has_scrolling_mechanism()
-        self.style().is_some_and(|style| {
+        self.style(can_gc).is_some_and(|style| {
             style.get_box().clone_overflow_x().is_scrollable() ||
                 style.get_box().clone_overflow_y().is_scrollable()
         })
     }
 
-    fn has_overflow(&self) -> bool {
-        self.ScrollHeight() > self.ClientHeight() || self.ScrollWidth() > self.ClientWidth()
+    fn has_overflow(&self, can_gc: CanGc) -> bool {
+        self.ScrollHeight(can_gc) > self.ClientHeight(can_gc) ||
+            self.ScrollWidth(can_gc) > self.ClientWidth(can_gc)
     }
 
     fn shadow_root(&self) -> Option<DomRoot<ShadowRoot>> {
@@ -1835,7 +1836,7 @@ impl Element {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scroll
-    pub fn scroll(&self, x_: f64, y_: f64, behavior: ScrollBehavior) {
+    pub fn scroll(&self, x_: f64, y_: f64, behavior: ScrollBehavior, can_gc: CanGc) {
         // Step 1.2 or 2.3
         let x = if x_.is_finite() { x_ } else { 0.0f64 };
         let y = if y_.is_finite() { y_ } else { 0.0f64 };
@@ -1859,7 +1860,7 @@ impl Element {
         // Step 7
         if *self.root_element() == *self {
             if doc.quirks_mode() != QuirksMode::Quirks {
-                win.scroll(x, y, behavior);
+                win.scroll(x, y, behavior, can_gc);
             }
 
             return;
@@ -1868,19 +1869,22 @@ impl Element {
         // Step 9
         if doc.GetBody().as_deref() == self.downcast::<HTMLElement>() &&
             doc.quirks_mode() == QuirksMode::Quirks &&
-            !self.is_potentially_scrollable_body()
+            !self.is_potentially_scrollable_body(can_gc)
         {
-            win.scroll(x, y, behavior);
+            win.scroll(x, y, behavior, can_gc);
             return;
         }
 
         // Step 10
-        if !self.has_css_layout_box() || !self.has_scrolling_box() || !self.has_overflow() {
+        if !self.has_css_layout_box(can_gc) ||
+            !self.has_scrolling_box(can_gc) ||
+            !self.has_overflow(can_gc)
+        {
             return;
         }
 
         // Step 11
-        win.scroll_node(node, x, y, behavior);
+        win.scroll_node(node, x, y, behavior, can_gc);
     }
 
     // https://w3c.github.io/DOM-Parsing/#parsing
@@ -2343,7 +2347,7 @@ impl ElementMethods for Element {
     // https://drafts.csswg.org/cssom-view/#dom-element-getclientrects
     fn GetClientRects(&self, can_gc: CanGc) -> Vec<DomRoot<DOMRect>> {
         let win = window_from_node(self);
-        let raw_rects = self.upcast::<Node>().content_boxes();
+        let raw_rects = self.upcast::<Node>().content_boxes(can_gc);
         raw_rects
             .iter()
             .map(|rect| {
@@ -2362,7 +2366,7 @@ impl ElementMethods for Element {
     // https://drafts.csswg.org/cssom-view/#dom-element-getboundingclientrect
     fn GetBoundingClientRect(&self, can_gc: CanGc) -> DomRoot<DOMRect> {
         let win = window_from_node(self);
-        let rect = self.upcast::<Node>().bounding_content_box_or_zero();
+        let rect = self.upcast::<Node>().bounding_content_box_or_zero(can_gc);
         DOMRect::new(
             win.upcast(),
             rect.origin.x.to_f64_px(),
@@ -2374,47 +2378,52 @@ impl ElementMethods for Element {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scroll
-    fn Scroll(&self, options: &ScrollToOptions) {
+    fn Scroll(&self, options: &ScrollToOptions, can_gc: CanGc) {
         // Step 1
-        let left = options.left.unwrap_or(self.ScrollLeft());
-        let top = options.top.unwrap_or(self.ScrollTop());
-        self.scroll(left, top, options.parent.behavior);
+        let left = options.left.unwrap_or(self.ScrollLeft(can_gc));
+        let top = options.top.unwrap_or(self.ScrollTop(can_gc));
+        self.scroll(left, top, options.parent.behavior, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scroll
-    fn Scroll_(&self, x: f64, y: f64) {
-        self.scroll(x, y, ScrollBehavior::Auto);
+    fn Scroll_(&self, x: f64, y: f64, can_gc: CanGc) {
+        self.scroll(x, y, ScrollBehavior::Auto, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollto
     fn ScrollTo(&self, options: &ScrollToOptions) {
-        self.Scroll(options);
+        self.Scroll(options, CanGc::note());
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollto
     fn ScrollTo_(&self, x: f64, y: f64) {
-        self.Scroll_(x, y);
+        self.Scroll_(x, y, CanGc::note());
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollby
-    fn ScrollBy(&self, options: &ScrollToOptions) {
+    fn ScrollBy(&self, options: &ScrollToOptions, can_gc: CanGc) {
         // Step 2
         let delta_left = options.left.unwrap_or(0.0f64);
         let delta_top = options.top.unwrap_or(0.0f64);
-        let left = self.ScrollLeft();
-        let top = self.ScrollTop();
-        self.scroll(left + delta_left, top + delta_top, options.parent.behavior);
+        let left = self.ScrollLeft(can_gc);
+        let top = self.ScrollTop(can_gc);
+        self.scroll(
+            left + delta_left,
+            top + delta_top,
+            options.parent.behavior,
+            can_gc,
+        );
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollby
-    fn ScrollBy_(&self, x: f64, y: f64) {
-        let left = self.ScrollLeft();
-        let top = self.ScrollTop();
-        self.scroll(left + x, top + y, ScrollBehavior::Auto);
+    fn ScrollBy_(&self, x: f64, y: f64, can_gc: CanGc) {
+        let left = self.ScrollLeft(can_gc);
+        let top = self.ScrollTop(can_gc);
+        self.scroll(left + x, top + y, ScrollBehavior::Auto, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrolltop
-    fn ScrollTop(&self) -> f64 {
+    fn ScrollTop(&self, can_gc: CanGc) -> f64 {
         let node = self.upcast::<Node>();
 
         // Step 1
@@ -2444,13 +2453,13 @@ impl ElementMethods for Element {
         // Step 7
         if doc.GetBody().as_deref() == self.downcast::<HTMLElement>() &&
             doc.quirks_mode() == QuirksMode::Quirks &&
-            !self.is_potentially_scrollable_body()
+            !self.is_potentially_scrollable_body(can_gc)
         {
             return win.ScrollY() as f64;
         }
 
         // Step 8
-        if !self.has_css_layout_box() {
+        if !self.has_css_layout_box(can_gc) {
             return 0.0;
         }
 
@@ -2460,7 +2469,7 @@ impl ElementMethods for Element {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrolltop
-    fn SetScrollTop(&self, y_: f64) {
+    fn SetScrollTop(&self, y_: f64, can_gc: CanGc) {
         let behavior = ScrollBehavior::Auto;
 
         // Step 1, 2
@@ -2485,7 +2494,7 @@ impl ElementMethods for Element {
         // Step 7
         if *self.root_element() == *self {
             if doc.quirks_mode() != QuirksMode::Quirks {
-                win.scroll(win.ScrollX() as f64, y, behavior);
+                win.scroll(win.ScrollX() as f64, y, behavior, can_gc);
             }
 
             return;
@@ -2494,23 +2503,26 @@ impl ElementMethods for Element {
         // Step 9
         if doc.GetBody().as_deref() == self.downcast::<HTMLElement>() &&
             doc.quirks_mode() == QuirksMode::Quirks &&
-            !self.is_potentially_scrollable_body()
+            !self.is_potentially_scrollable_body(can_gc)
         {
-            win.scroll(win.ScrollX() as f64, y, behavior);
+            win.scroll(win.ScrollX() as f64, y, behavior, can_gc);
             return;
         }
 
         // Step 10
-        if !self.has_css_layout_box() || !self.has_scrolling_box() || !self.has_overflow() {
+        if !self.has_css_layout_box(can_gc) ||
+            !self.has_scrolling_box(can_gc) ||
+            !self.has_overflow(can_gc)
+        {
             return;
         }
 
         // Step 11
-        win.scroll_node(node, self.ScrollLeft(), y, behavior);
+        win.scroll_node(node, self.ScrollLeft(can_gc), y, behavior, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrolltop
-    fn ScrollLeft(&self) -> f64 {
+    fn ScrollLeft(&self, can_gc: CanGc) -> f64 {
         let node = self.upcast::<Node>();
 
         // Step 1
@@ -2540,13 +2552,13 @@ impl ElementMethods for Element {
         // Step 7
         if doc.GetBody().as_deref() == self.downcast::<HTMLElement>() &&
             doc.quirks_mode() == QuirksMode::Quirks &&
-            !self.is_potentially_scrollable_body()
+            !self.is_potentially_scrollable_body(can_gc)
         {
             return win.ScrollX() as f64;
         }
 
         // Step 8
-        if !self.has_css_layout_box() {
+        if !self.has_css_layout_box(can_gc) {
             return 0.0;
         }
 
@@ -2556,7 +2568,7 @@ impl ElementMethods for Element {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollleft
-    fn SetScrollLeft(&self, x_: f64) {
+    fn SetScrollLeft(&self, x_: f64, can_gc: CanGc) {
         let behavior = ScrollBehavior::Auto;
 
         // Step 1, 2
@@ -2584,56 +2596,59 @@ impl ElementMethods for Element {
                 return;
             }
 
-            win.scroll(x, win.ScrollY() as f64, behavior);
+            win.scroll(x, win.ScrollY() as f64, behavior, can_gc);
             return;
         }
 
         // Step 9
         if doc.GetBody().as_deref() == self.downcast::<HTMLElement>() &&
             doc.quirks_mode() == QuirksMode::Quirks &&
-            !self.is_potentially_scrollable_body()
+            !self.is_potentially_scrollable_body(can_gc)
         {
-            win.scroll(x, win.ScrollY() as f64, behavior);
+            win.scroll(x, win.ScrollY() as f64, behavior, can_gc);
             return;
         }
 
         // Step 10
-        if !self.has_css_layout_box() || !self.has_scrolling_box() || !self.has_overflow() {
+        if !self.has_css_layout_box(can_gc) ||
+            !self.has_scrolling_box(can_gc) ||
+            !self.has_overflow(can_gc)
+        {
             return;
         }
 
         // Step 11
-        win.scroll_node(node, x, self.ScrollTop(), behavior);
+        win.scroll_node(node, x, self.ScrollTop(can_gc), behavior, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth
-    fn ScrollWidth(&self) -> i32 {
-        self.upcast::<Node>().scroll_area().size.width
+    fn ScrollWidth(&self, can_gc: CanGc) -> i32 {
+        self.upcast::<Node>().scroll_area(can_gc).size.width
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-scrollheight
-    fn ScrollHeight(&self) -> i32 {
-        self.upcast::<Node>().scroll_area().size.height
+    fn ScrollHeight(&self, can_gc: CanGc) -> i32 {
+        self.upcast::<Node>().scroll_area(can_gc).size.height
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-clienttop
-    fn ClientTop(&self) -> i32 {
-        self.client_rect().origin.y
+    fn ClientTop(&self, can_gc: CanGc) -> i32 {
+        self.client_rect(can_gc).origin.y
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-clientleft
-    fn ClientLeft(&self) -> i32 {
-        self.client_rect().origin.x
+    fn ClientLeft(&self, can_gc: CanGc) -> i32 {
+        self.client_rect(can_gc).origin.x
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-clientwidth
-    fn ClientWidth(&self) -> i32 {
-        self.client_rect().size.width
+    fn ClientWidth(&self, can_gc: CanGc) -> i32 {
+        self.client_rect(can_gc).size.width
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-element-clientheight
-    fn ClientHeight(&self) -> i32 {
-        self.client_rect().size.height
+    fn ClientHeight(&self, can_gc: CanGc) -> i32 {
+        self.client_rect(can_gc).size.height
     }
 
     /// <https://w3c.github.io/DOM-Parsing/#widl-Element-innerHTML>
@@ -3850,7 +3865,7 @@ impl SelectorsElement for DomRoot<Element> {
 }
 
 impl Element {
-    fn client_rect(&self) -> Rect<i32> {
+    fn client_rect(&self, can_gc: CanGc) -> Rect<i32> {
         let doc = self.node.owner_doc();
 
         if let Some(rect) = self
@@ -3867,7 +3882,7 @@ impl Element {
             }
         }
 
-        let mut rect = self.upcast::<Node>().client_rect();
+        let mut rect = self.upcast::<Node>().client_rect(can_gc);
         let in_quirks_mode = doc.quirks_mode() == QuirksMode::Quirks;
 
         if (in_quirks_mode && doc.GetBody().as_deref() == self.downcast::<HTMLElement>()) ||
@@ -4329,9 +4344,11 @@ impl TaskOnce for ElementPerformFullscreenEnter {
         // Step 7.5
         element.set_fullscreen_state(true);
         document.set_fullscreen_element(Some(&element));
-        document
-            .window()
-            .reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
+        document.window().reflow(
+            ReflowGoal::Full,
+            ReflowReason::ElementStateChanged,
+            CanGc::note(),
+        );
 
         // Step 7.6
         document
@@ -4366,9 +4383,11 @@ impl TaskOnce for ElementPerformFullscreenExit {
         // Step 9.6
         element.set_fullscreen_state(false);
 
-        document
-            .window()
-            .reflow(ReflowGoal::Full, ReflowReason::ElementStateChanged);
+        document.window().reflow(
+            ReflowGoal::Full,
+            ReflowReason::ElementStateChanged,
+            CanGc::note(),
+        );
 
         document.set_fullscreen_element(None);
 
diff --git a/components/script/dom/fontfaceset.rs b/components/script/dom/fontfaceset.rs
index d9b05b29e60..fa2fae410d4 100644
--- a/components/script/dom/fontfaceset.rs
+++ b/components/script/dom/fontfaceset.rs
@@ -31,12 +31,12 @@ impl FontFaceSet {
         }
     }
 
-    pub fn new(global: &GlobalScope, proto: Option<HandleObject>) -> DomRoot<Self> {
+    pub fn new(global: &GlobalScope, proto: Option<HandleObject>, can_gc: CanGc) -> DomRoot<Self> {
         reflect_dom_object_with_proto(
             Box::new(FontFaceSet::new_inherited(global)),
             global,
             proto,
-            CanGc::note(),
+            can_gc,
         )
     }
 
diff --git a/components/script/dom/history.rs b/components/script/dom/history.rs
index 47f1a983240..d53dbbffb60 100644
--- a/components/script/dom/history.rs
+++ b/components/script/dom/history.rs
@@ -94,7 +94,7 @@ impl History {
 
         // Step 8
         if let Some(fragment) = url.fragment() {
-            document.check_and_scroll_fragment(fragment);
+            document.check_and_scroll_fragment(fragment, can_gc);
         }
 
         // Step 11
diff --git a/components/script/dom/htmlanchorelement.rs b/components/script/dom/htmlanchorelement.rs
index 109c9751f7c..a38195030c0 100644
--- a/components/script/dom/htmlanchorelement.rs
+++ b/components/script/dom/htmlanchorelement.rs
@@ -604,7 +604,7 @@ impl Activatable for HTMLAnchorElement {
         if let Some(element) = target.downcast::<Element>() {
             if target.is::<HTMLImageElement>() && element.has_attribute(&local_name!("ismap")) {
                 let target_node = element.upcast::<Node>();
-                let rect = target_node.bounding_content_box_or_zero();
+                let rect = target_node.bounding_content_box_or_zero(CanGc::note());
                 ismap_suffix = Some(format!(
                     "?{},{}",
                     mouse_event.ClientX().to_f32().unwrap() - rect.origin.x.to_f32_px(),
diff --git a/components/script/dom/htmlbuttonelement.rs b/components/script/dom/htmlbuttonelement.rs
index 485f2a8ecde..485f2a8ecde 100755..100644
--- a/components/script/dom/htmlbuttonelement.rs
+++ b/components/script/dom/htmlbuttonelement.rs
diff --git a/components/script/dom/htmlelement.rs b/components/script/dom/htmlelement.rs
index 7b68df015cc..d6f63e3ef72 100644
--- a/components/script/dom/htmlelement.rs
+++ b/components/script/dom/htmlelement.rs
@@ -113,18 +113,18 @@ impl HTMLElement {
     /// `.outerText` in JavaScript.`
     ///
     /// <https://html.spec.whatwg.org/multipage/#get-the-text-steps>
-    fn get_inner_outer_text(&self) -> DOMString {
+    fn get_inner_outer_text(&self, can_gc: CanGc) -> DOMString {
         let node = self.upcast::<Node>();
         let window = window_from_node(node);
         let element = self.as_element();
 
         // Step 1.
-        let element_not_rendered = !node.is_connected() || !element.has_css_layout_box();
+        let element_not_rendered = !node.is_connected() || !element.has_css_layout_box(can_gc);
         if element_not_rendered {
             return node.GetTextContent().unwrap();
         }
 
-        window.layout_reflow(QueryMsg::ElementInnerOuterTextQuery);
+        window.layout_reflow(QueryMsg::ElementInnerOuterTextQuery, can_gc);
         let text = window
             .layout()
             .query_element_inner_outer_text(node.to_trusted_node_address());
@@ -419,65 +419,65 @@ impl HTMLElementMethods for HTMLElement {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetparent
-    fn GetOffsetParent(&self) -> Option<DomRoot<Element>> {
+    fn GetOffsetParent(&self, can_gc: CanGc) -> Option<DomRoot<Element>> {
         if self.is::<HTMLBodyElement>() || self.is::<HTMLHtmlElement>() {
             return None;
         }
 
         let node = self.upcast::<Node>();
         let window = window_from_node(self);
-        let (element, _) = window.offset_parent_query(node);
+        let (element, _) = window.offset_parent_query(node, can_gc);
 
         element
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsettop
-    fn OffsetTop(&self) -> i32 {
+    fn OffsetTop(&self, can_gc: CanGc) -> i32 {
         if self.is::<HTMLBodyElement>() {
             return 0;
         }
 
         let node = self.upcast::<Node>();
         let window = window_from_node(self);
-        let (_, rect) = window.offset_parent_query(node);
+        let (_, rect) = window.offset_parent_query(node, can_gc);
 
         rect.origin.y.to_nearest_px()
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetleft
-    fn OffsetLeft(&self) -> i32 {
+    fn OffsetLeft(&self, can_gc: CanGc) -> i32 {
         if self.is::<HTMLBodyElement>() {
             return 0;
         }
 
         let node = self.upcast::<Node>();
         let window = window_from_node(self);
-        let (_, rect) = window.offset_parent_query(node);
+        let (_, rect) = window.offset_parent_query(node, can_gc);
 
         rect.origin.x.to_nearest_px()
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetwidth
-    fn OffsetWidth(&self) -> i32 {
+    fn OffsetWidth(&self, can_gc: CanGc) -> i32 {
         let node = self.upcast::<Node>();
         let window = window_from_node(self);
-        let (_, rect) = window.offset_parent_query(node);
+        let (_, rect) = window.offset_parent_query(node, can_gc);
 
         rect.size.width.to_nearest_px()
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetheight
-    fn OffsetHeight(&self) -> i32 {
+    fn OffsetHeight(&self, can_gc: CanGc) -> i32 {
         let node = self.upcast::<Node>();
         let window = window_from_node(self);
-        let (_, rect) = window.offset_parent_query(node);
+        let (_, rect) = window.offset_parent_query(node, can_gc);
 
         rect.size.height.to_nearest_px()
     }
 
     /// <https://html.spec.whatwg.org/multipage/#the-innertext-idl-attribute>
-    fn InnerText(&self) -> DOMString {
-        self.get_inner_outer_text()
+    fn InnerText(&self, can_gc: CanGc) -> DOMString {
+        self.get_inner_outer_text(can_gc)
     }
 
     /// <https://html.spec.whatwg.org/multipage/#set-the-inner-text-steps>
@@ -491,8 +491,8 @@ impl HTMLElementMethods for HTMLElement {
     }
 
     /// <https://html.spec.whatwg.org/multipage/#dom-outertext>
-    fn GetOuterText(&self) -> Fallible<DOMString> {
-        Ok(self.get_inner_outer_text())
+    fn GetOuterText(&self, can_gc: CanGc) -> Fallible<DOMString> {
+        Ok(self.get_inner_outer_text(can_gc))
     }
 
     /// <https://html.spec.whatwg.org/multipage/#the-innertext-idl-attribute:dom-outertext-2>
diff --git a/components/script/dom/htmliframeelement.rs b/components/script/dom/htmliframeelement.rs
index 1f391225357..c62e28aca71 100644
--- a/components/script/dom/htmliframeelement.rs
+++ b/components/script/dom/htmliframeelement.rs
@@ -193,7 +193,7 @@ impl HTMLIFrameElement {
 
         let window_size = WindowSizeData {
             initial_viewport: window
-                .inner_window_dimensions_query(browsing_context_id)
+                .inner_window_dimensions_query(browsing_context_id, can_gc)
                 .unwrap_or_default(),
             device_pixel_ratio: window.device_pixel_ratio(),
         };
diff --git a/components/script/dom/htmlimageelement.rs b/components/script/dom/htmlimageelement.rs
index 6280f4b32b8..33f907d9985 100644
--- a/components/script/dom/htmlimageelement.rs
+++ b/components/script/dom/htmlimageelement.rs
@@ -1596,9 +1596,9 @@ impl HTMLImageElementMethods for HTMLImageElement {
     make_bool_setter!(SetIsMap, "ismap");
 
     // https://html.spec.whatwg.org/multipage/#dom-img-width
-    fn Width(&self) -> u32 {
+    fn Width(&self, can_gc: CanGc) -> u32 {
         let node = self.upcast::<Node>();
-        match node.bounding_content_box() {
+        match node.bounding_content_box(can_gc) {
             Some(rect) => rect.size.width.to_px() as u32,
             None => self.NaturalWidth(),
         }
@@ -1610,9 +1610,9 @@ impl HTMLImageElementMethods for HTMLImageElement {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-img-height
-    fn Height(&self) -> u32 {
+    fn Height(&self, can_gc: CanGc) -> u32 {
         let node = self.upcast::<Node>();
-        match node.bounding_content_box() {
+        match node.bounding_content_box(can_gc) {
             Some(rect) => rect.size.height.to_px() as u32,
             None => self.NaturalHeight(),
         }
diff --git a/components/script/dom/htmlinputelement.rs b/components/script/dom/htmlinputelement.rs
index 66e5b036f86..c1bf932350f 100755..100644
--- a/components/script/dom/htmlinputelement.rs
+++ b/components/script/dom/htmlinputelement.rs
@@ -2517,7 +2517,11 @@ impl VirtualMethods for HTMLInputElement {
                     // now.
                     if let Some(point_in_target) = mouse_event.point_in_target() {
                         let window = window_from_node(self);
-                        let index = window.text_index_query(self.upcast::<Node>(), point_in_target);
+                        let index = window.text_index_query(
+                            self.upcast::<Node>(),
+                            point_in_target,
+                            CanGc::note(),
+                        );
                         if let Some(i) = index {
                             self.textinput.borrow_mut().set_edit_point_index(i);
                             // trigger redraw
diff --git a/components/script/dom/htmlobjectelement.rs b/components/script/dom/htmlobjectelement.rs
index 0518bdbab2c..0518bdbab2c 100755..100644
--- a/components/script/dom/htmlobjectelement.rs
+++ b/components/script/dom/htmlobjectelement.rs
diff --git a/components/script/dom/htmlselectelement.rs b/components/script/dom/htmlselectelement.rs
index 7c53abfd17b..7c53abfd17b 100755..100644
--- a/components/script/dom/htmlselectelement.rs
+++ b/components/script/dom/htmlselectelement.rs
diff --git a/components/script/dom/htmltextareaelement.rs b/components/script/dom/htmltextareaelement.rs
index dc1158775ba..dc1158775ba 100755..100644
--- a/components/script/dom/htmltextareaelement.rs
+++ b/components/script/dom/htmltextareaelement.rs
diff --git a/components/script/dom/mouseevent.rs b/components/script/dom/mouseevent.rs
index 5bab3406d2f..ceea0f5c46e 100644
--- a/components/script/dom/mouseevent.rs
+++ b/components/script/dom/mouseevent.rs
@@ -276,13 +276,13 @@ impl MouseEventMethods for MouseEvent {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-mouseevent-offsetx
-    fn OffsetX(&self) -> i32 {
+    fn OffsetX(&self, can_gc: CanGc) -> i32 {
         let event = self.upcast::<Event>();
         if event.dispatching() {
             match event.GetTarget() {
                 Some(target) => {
                     if let Some(node) = target.downcast::<Node>() {
-                        let rect = node.client_rect();
+                        let rect = node.client_rect(can_gc);
                         self.client_x.get() - rect.origin.x
                     } else {
                         self.offset_x.get()
@@ -296,13 +296,13 @@ impl MouseEventMethods for MouseEvent {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-mouseevent-offsety
-    fn OffsetY(&self) -> i32 {
+    fn OffsetY(&self, can_gc: CanGc) -> i32 {
         let event = self.upcast::<Event>();
         if event.dispatching() {
             match event.GetTarget() {
                 Some(target) => {
                     if let Some(node) = target.downcast::<Node>() {
-                        let rect = node.client_rect();
+                        let rect = node.client_rect(can_gc);
                         self.client_y.get() - rect.origin.y
                     } else {
                         self.offset_y.get()
diff --git a/components/script/dom/node.rs b/components/script/dom/node.rs
index 89876e8b3d9..4851728803e 100644
--- a/components/script/dom/node.rs
+++ b/components/script/dom/node.rs
@@ -793,25 +793,25 @@ impl Node {
 
     /// Returns the rendered bounding content box if the element is rendered,
     /// and none otherwise.
-    pub fn bounding_content_box(&self) -> Option<Rect<Au>> {
-        window_from_node(self).content_box_query(self)
+    pub fn bounding_content_box(&self, can_gc: CanGc) -> Option<Rect<Au>> {
+        window_from_node(self).content_box_query(self, can_gc)
     }
 
-    pub fn bounding_content_box_or_zero(&self) -> Rect<Au> {
-        self.bounding_content_box().unwrap_or_else(Rect::zero)
+    pub fn bounding_content_box_or_zero(&self, can_gc: CanGc) -> Rect<Au> {
+        self.bounding_content_box(can_gc).unwrap_or_else(Rect::zero)
     }
 
-    pub fn content_boxes(&self) -> Vec<Rect<Au>> {
-        window_from_node(self).content_boxes_query(self)
+    pub fn content_boxes(&self, can_gc: CanGc) -> Vec<Rect<Au>> {
+        window_from_node(self).content_boxes_query(self, can_gc)
     }
 
-    pub fn client_rect(&self) -> Rect<i32> {
-        window_from_node(self).client_rect_query(self)
+    pub fn client_rect(&self, can_gc: CanGc) -> Rect<i32> {
+        window_from_node(self).client_rect_query(self, can_gc)
     }
 
     /// <https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth>
     /// <https://drafts.csswg.org/cssom-view/#dom-element-scrollheight>
-    pub fn scroll_area(&self) -> Rect<i32> {
+    pub fn scroll_area(&self, can_gc: CanGc) -> Rect<i32> {
         // "1. Let document be the element’s node document.""
         let document = self.owner_doc();
 
@@ -837,7 +837,7 @@ impl Node {
         // element is not potentially scrollable, return max(viewport scrolling area
         // width, viewport width)."
         if (is_root && !in_quirks_mode) || (is_body_element && in_quirks_mode) {
-            let viewport_scrolling_area = window.scrolling_area_query(None);
+            let viewport_scrolling_area = window.scrolling_area_query(None, can_gc);
             return Rect::new(
                 viewport_scrolling_area.origin,
                 viewport_scrolling_area.size.max(viewport),
@@ -847,7 +847,7 @@ impl Node {
         // "6. If the element does not have any associated box return zero and terminate
         // these steps."
         // "7. Return the width of the element’s scrolling area."
-        window.scrolling_area_query(Some(self))
+        window.scrolling_area_query(Some(self), can_gc)
     }
 
     pub fn scroll_offset(&self) -> Vector2D<f32> {
@@ -1270,8 +1270,8 @@ impl Node {
         })
     }
 
-    pub fn style(&self) -> Option<Arc<ComputedValues>> {
-        if !window_from_node(self).layout_reflow(QueryMsg::StyleQuery) {
+    pub fn style(&self, can_gc: CanGc) -> Option<Arc<ComputedValues>> {
+        if !window_from_node(self).layout_reflow(QueryMsg::StyleQuery, can_gc) {
             return None;
         }
         self.style_data
diff --git a/components/script/dom/offscreencanvasrenderingcontext2d.rs b/components/script/dom/offscreencanvasrenderingcontext2d.rs
index a7e8ceeb209..23ed19b33e9 100644
--- a/components/script/dom/offscreencanvasrenderingcontext2d.rs
+++ b/components/script/dom/offscreencanvasrenderingcontext2d.rs
@@ -140,9 +140,9 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowcolor
-    fn SetShadowColor(&self, value: DOMString) {
+    fn SetShadowColor(&self, value: DOMString, can_gc: CanGc) {
         self.canvas_state
-            .set_shadow_color(self.htmlcanvas.as_deref(), value)
+            .set_shadow_color(self.htmlcanvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
@@ -151,9 +151,9 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
-    fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
+    fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern, can_gc: CanGc) {
         self.canvas_state
-            .set_stroke_style(self.htmlcanvas.as_deref(), value)
+            .set_stroke_style(self.htmlcanvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
@@ -162,9 +162,9 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
-    fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
+    fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern, can_gc: CanGc) {
         self.canvas_state
-            .set_fill_style(self.htmlcanvas.as_deref(), value)
+            .set_fill_style(self.htmlcanvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-createlineargradient
@@ -250,15 +250,15 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-filltext
-    fn FillText(&self, text: DOMString, x: f64, y: f64, max_width: Option<f64>) {
+    fn FillText(&self, text: DOMString, x: f64, y: f64, max_width: Option<f64>, can_gc: CanGc) {
         self.canvas_state
-            .fill_text(self.htmlcanvas.as_deref(), text, x, y, max_width)
+            .fill_text(self.htmlcanvas.as_deref(), text, x, y, max_width, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#textmetrics
-    fn MeasureText(&self, text: DOMString) -> DomRoot<TextMetrics> {
+    fn MeasureText(&self, text: DOMString, can_gc: CanGc) -> DomRoot<TextMetrics> {
         self.canvas_state
-            .measure_text(&self.global(), self.htmlcanvas.as_deref(), text)
+            .measure_text(&self.global(), self.htmlcanvas.as_deref(), text, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-font
@@ -267,9 +267,9 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-font
-    fn SetFont(&self, value: DOMString) {
+    fn SetFont(&self, value: DOMString, can_gc: CanGc) {
         self.canvas_state
-            .set_font(self.htmlcanvas.as_deref(), value)
+            .set_font(self.htmlcanvas.as_deref(), value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-textalign
diff --git a/components/script/dom/paintrenderingcontext2d.rs b/components/script/dom/paintrenderingcontext2d.rs
index 9b867e80682..95c005dff30 100644
--- a/components/script/dom/paintrenderingcontext2d.rs
+++ b/components/script/dom/paintrenderingcontext2d.rs
@@ -304,8 +304,8 @@ impl PaintRenderingContext2DMethods for PaintRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
-    fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
-        self.context.SetStrokeStyle(value)
+    fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern, can_gc: CanGc) {
+        self.context.SetStrokeStyle(value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
@@ -314,8 +314,8 @@ impl PaintRenderingContext2DMethods for PaintRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
-    fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
-        self.context.SetFillStyle(value)
+    fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern, can_gc: CanGc) {
+        self.context.SetFillStyle(value, can_gc)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-createlineargradient
@@ -427,7 +427,7 @@ impl PaintRenderingContext2DMethods for PaintRenderingContext2D {
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowcolor
-    fn SetShadowColor(&self, value: DOMString) {
-        self.context.SetShadowColor(value)
+    fn SetShadowColor(&self, value: DOMString, can_gc: CanGc) {
+        self.context.SetShadowColor(value, can_gc)
     }
 }
diff --git a/components/script/dom/resizeobserver.rs b/components/script/dom/resizeobserver.rs
index 244c0adecc4..31e111cb2ad 100644
--- a/components/script/dom/resizeobserver.rs
+++ b/components/script/dom/resizeobserver.rs
@@ -75,10 +75,11 @@ impl ResizeObserver {
         &self,
         depth: &ResizeObservationDepth,
         has_active: &mut bool,
+        can_gc: CanGc,
     ) {
         for (observation, target) in self.observation_targets.borrow_mut().iter_mut() {
             observation.state = Default::default();
-            if let Some(size) = observation.is_active(target) {
+            if let Some(size) = observation.is_active(target, can_gc) {
                 let target_depth = calculate_depth_for_node(target);
                 if target_depth > *depth {
                     observation.state = ObservationState::Active(size).into();
@@ -251,9 +252,9 @@ impl ResizeObservation {
     /// <https://drafts.csswg.org/resize-observer/#dom-resizeobservation-isactive>
     /// Returning an optional calculated size, instead of a boolean,
     /// to avoid recalculating the size in the subsequent broadcast.
-    fn is_active(&self, target: &Element) -> Option<Rect<Au>> {
+    fn is_active(&self, target: &Element, can_gc: CanGc) -> Option<Rect<Au>> {
         let last_reported_size = self.last_reported_sizes.borrow()[0];
-        let box_size = calculate_box_size(target, &self.observed_box.borrow());
+        let box_size = calculate_box_size(target, &self.observed_box.borrow(), can_gc);
         let is_active = box_size.width().to_f64_px() != last_reported_size.inline_size() ||
             box_size.height().to_f64_px() != last_reported_size.block_size();
         if is_active {
@@ -272,14 +273,18 @@ fn calculate_depth_for_node(target: &Element) -> ResizeObservationDepth {
 }
 
 /// <https://drafts.csswg.org/resize-observer/#calculate-box-size>
-fn calculate_box_size(target: &Element, observed_box: &ResizeObserverBoxOptions) -> Rect<Au> {
+fn calculate_box_size(
+    target: &Element,
+    observed_box: &ResizeObserverBoxOptions,
+    can_gc: CanGc,
+) -> Rect<Au> {
     match observed_box {
         ResizeObserverBoxOptions::Content_box => {
             // Note: only taking first fragment,
             // but the spec will expand to cover all fragments.
             target
                 .upcast::<Node>()
-                .content_boxes()
+                .content_boxes(can_gc)
                 .pop()
                 .unwrap_or_else(Rect::zero)
         },
diff --git a/components/script/dom/servoparser/mod.rs b/components/script/dom/servoparser/mod.rs
index bd21a90c91b..17fddca3b87 100644
--- a/components/script/dom/servoparser/mod.rs
+++ b/components/script/dom/servoparser/mod.rs
@@ -588,7 +588,7 @@ impl ServoParser {
             assert!(!self.suspended.get());
             assert!(!self.aborted.get());
 
-            self.document.reflow_if_reflow_timer_expired();
+            self.document.reflow_if_reflow_timer_expired(can_gc);
             let script = match feed(&self.tokenizer) {
                 TokenizerResult::Done => return,
                 TokenizerResult::Script(script) => script,
diff --git a/components/script/dom/shadowroot.rs b/components/script/dom/shadowroot.rs
index 586fd1da22b..1db7f44ff63 100644
--- a/components/script/dom/shadowroot.rs
+++ b/components/script/dom/shadowroot.rs
@@ -26,6 +26,7 @@ use crate::dom::element::Element;
 use crate::dom::node::{Node, NodeDamage, NodeFlags, ShadowIncluding, UnbindContext};
 use crate::dom::stylesheetlist::{StyleSheetList, StyleSheetListOwner};
 use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
 use crate::stylesheet_set::StylesheetSetRef;
 
 /// Whether a shadow root hosts an User Agent widget.
@@ -177,7 +178,12 @@ impl ShadowRootMethods for ShadowRoot {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-document-elementfrompoint
-    fn ElementFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Option<DomRoot<Element>> {
+    fn ElementFromPoint(
+        &self,
+        x: Finite<f64>,
+        y: Finite<f64>,
+        can_gc: CanGc,
+    ) -> Option<DomRoot<Element>> {
         // Return the result of running the retargeting algorithm with context object
         // and the original result as input.
         match self.document_or_shadow_root.element_from_point(
@@ -185,6 +191,7 @@ impl ShadowRootMethods for ShadowRoot {
             y,
             None,
             self.document.has_browsing_context(),
+            can_gc,
         ) {
             Some(e) => {
                 let retargeted_node = self.upcast::<Node>().retarget(e.upcast::<Node>());
@@ -195,13 +202,18 @@ impl ShadowRootMethods for ShadowRoot {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-document-elementsfrompoint
-    fn ElementsFromPoint(&self, x: Finite<f64>, y: Finite<f64>) -> Vec<DomRoot<Element>> {
+    fn ElementsFromPoint(
+        &self,
+        x: Finite<f64>,
+        y: Finite<f64>,
+        can_gc: CanGc,
+    ) -> Vec<DomRoot<Element>> {
         // Return the result of running the retargeting algorithm with context object
         // and the original result as input
         let mut elements = Vec::new();
         for e in self
             .document_or_shadow_root
-            .elements_from_point(x, y, None, self.document.has_browsing_context())
+            .elements_from_point(x, y, None, self.document.has_browsing_context(), can_gc)
             .iter()
         {
             let retargeted_node = self.upcast::<Node>().retarget(e.upcast::<Node>());
diff --git a/components/script/dom/window.rs b/components/script/dom/window.rs
index 6f4b7152233..b0475a8a6df 100644
--- a/components/script/dom/window.rs
+++ b/components/script/dom/window.rs
@@ -1196,46 +1196,46 @@ impl WindowMethods for Window {
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-scroll
-    fn Scroll(&self, options: &ScrollToOptions) {
+    fn Scroll(&self, options: &ScrollToOptions, can_gc: CanGc) {
         // Step 1
         let left = options.left.unwrap_or(0.0f64);
         let top = options.top.unwrap_or(0.0f64);
-        self.scroll(left, top, options.parent.behavior);
+        self.scroll(left, top, options.parent.behavior, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-scroll
-    fn Scroll_(&self, x: f64, y: f64) {
-        self.scroll(x, y, ScrollBehavior::Auto);
+    fn Scroll_(&self, x: f64, y: f64, can_gc: CanGc) {
+        self.scroll(x, y, ScrollBehavior::Auto, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-scrollto
     fn ScrollTo(&self, options: &ScrollToOptions) {
-        self.Scroll(options);
+        self.Scroll(options, CanGc::note());
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-scrollto
     fn ScrollTo_(&self, x: f64, y: f64) {
-        self.scroll(x, y, ScrollBehavior::Auto);
+        self.scroll(x, y, ScrollBehavior::Auto, CanGc::note());
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-scrollby
-    fn ScrollBy(&self, options: &ScrollToOptions) {
+    fn ScrollBy(&self, options: &ScrollToOptions, can_gc: CanGc) {
         // Step 1
         let x = options.left.unwrap_or(0.0f64);
         let y = options.top.unwrap_or(0.0f64);
-        self.ScrollBy_(x, y);
-        self.scroll(x, y, options.parent.behavior);
+        self.ScrollBy_(x, y, can_gc);
+        self.scroll(x, y, options.parent.behavior, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-scrollby
-    fn ScrollBy_(&self, x: f64, y: f64) {
+    fn ScrollBy_(&self, x: f64, y: f64, can_gc: CanGc) {
         // Step 3
         let left = x + self.ScrollX() as f64;
         // Step 4
         let top = y + self.ScrollY() as f64;
 
         // Step 5
-        self.scroll(left, top, ScrollBehavior::Auto);
+        self.scroll(left, top, ScrollBehavior::Auto, can_gc);
     }
 
     // https://drafts.csswg.org/cssom-view/#dom-window-resizeto
@@ -1700,7 +1700,7 @@ impl Window {
     }
 
     /// <https://drafts.csswg.org/cssom-view/#dom-window-scroll>
-    pub fn scroll(&self, x_: f64, y_: f64, behavior: ScrollBehavior) {
+    pub fn scroll(&self, x_: f64, y_: f64, behavior: ScrollBehavior, can_gc: CanGc) {
         // Step 3
         let xfinite = if x_.is_finite() { x_ } else { 0.0f64 };
         let yfinite = if y_.is_finite() { y_ } else { 0.0f64 };
@@ -1713,7 +1713,7 @@ impl Window {
 
         // Step 7 & 8
         // TODO: Consider `block-end` and `inline-end` overflow direction.
-        let scrolling_area = self.scrolling_area_query(None);
+        let scrolling_area = self.scrolling_area_query(None, can_gc);
         let x = xfinite
             .min(scrolling_area.width() as f64 - viewport.width as f64)
             .max(0.0f64);
@@ -1739,6 +1739,7 @@ impl Window {
             self.upcast::<GlobalScope>().pipeline_id().root_scroll_id(),
             behavior,
             None,
+            can_gc,
         );
     }
 
@@ -1750,6 +1751,7 @@ impl Window {
         scroll_id: ExternalScrollId,
         _behavior: ScrollBehavior,
         _element: Option<&Element>,
+        can_gc: CanGc,
     ) {
         // TODO Step 1
         // TODO(mrobinson, #18709): Add smooth scrolling support to WebRender so that we can
@@ -1760,6 +1762,7 @@ impl Window {
                 scroll_offset: Vector2D::new(-x, -y),
             }),
             ReflowReason::ScrollFromScript,
+            can_gc,
         );
     }
 
@@ -1960,7 +1963,7 @@ impl Window {
     /// that layout might hold if the first layout hasn't happened yet (which
     /// may happen in the only case a query reflow may bail out, that is, if the
     /// viewport size is not present). See #11223 for an example of that.
-    pub fn reflow(&self, reflow_goal: ReflowGoal, reason: ReflowReason) -> bool {
+    pub fn reflow(&self, reflow_goal: ReflowGoal, reason: ReflowReason, can_gc: CanGc) -> bool {
         // Fetch the pending web fonts before layout, in case a font loads during
         // the layout.
         let pending_web_fonts = self.layout.borrow().waiting_for_web_fonts_to_load();
@@ -1994,7 +1997,7 @@ impl Window {
         }
 
         let document = self.Document();
-        let font_face_set = document.Fonts();
+        let font_face_set = document.Fonts(can_gc);
         let is_ready_state_complete = document.ReadyState() == DocumentReadyState::Complete;
 
         // From https://drafts.csswg.org/css-font-loading/#font-face-set-ready:
@@ -2069,12 +2072,21 @@ impl Window {
         receiver.recv().unwrap();
     }
 
-    pub fn layout_reflow(&self, query_msg: QueryMsg) -> bool {
-        self.reflow(ReflowGoal::LayoutQuery(query_msg), ReflowReason::Query)
+    pub fn layout_reflow(&self, query_msg: QueryMsg, can_gc: CanGc) -> bool {
+        self.reflow(
+            ReflowGoal::LayoutQuery(query_msg),
+            ReflowReason::Query,
+            can_gc,
+        )
     }
 
-    pub fn resolved_font_style_query(&self, node: &Node, value: String) -> Option<ServoArc<Font>> {
-        if !self.layout_reflow(QueryMsg::ResolvedFontStyleQuery) {
+    pub fn resolved_font_style_query(
+        &self,
+        node: &Node,
+        value: String,
+        can_gc: CanGc,
+    ) -> Option<ServoArc<Font>> {
+        if !self.layout_reflow(QueryMsg::ResolvedFontStyleQuery, can_gc) {
             return None;
         }
 
@@ -2088,22 +2100,22 @@ impl Window {
         )
     }
 
-    pub fn content_box_query(&self, node: &Node) -> Option<UntypedRect<Au>> {
-        if !self.layout_reflow(QueryMsg::ContentBox) {
+    pub fn content_box_query(&self, node: &Node, can_gc: CanGc) -> Option<UntypedRect<Au>> {
+        if !self.layout_reflow(QueryMsg::ContentBox, can_gc) {
             return None;
         }
         self.layout.borrow().query_content_box(node.to_opaque())
     }
 
-    pub fn content_boxes_query(&self, node: &Node) -> Vec<UntypedRect<Au>> {
-        if !self.layout_reflow(QueryMsg::ContentBoxes) {
+    pub fn content_boxes_query(&self, node: &Node, can_gc: CanGc) -> Vec<UntypedRect<Au>> {
+        if !self.layout_reflow(QueryMsg::ContentBoxes, can_gc) {
             return vec![];
         }
         self.layout.borrow().query_content_boxes(node.to_opaque())
     }
 
-    pub fn client_rect_query(&self, node: &Node) -> UntypedRect<i32> {
-        if !self.layout_reflow(QueryMsg::ClientRectQuery) {
+    pub fn client_rect_query(&self, node: &Node, can_gc: CanGc) -> UntypedRect<i32> {
+        if !self.layout_reflow(QueryMsg::ClientRectQuery, can_gc) {
             return Rect::zero();
         }
         self.layout.borrow().query_client_rect(node.to_opaque())
@@ -2111,9 +2123,9 @@ impl Window {
 
     /// Find the scroll area of the given node, if it is not None. If the node
     /// is None, find the scroll area of the viewport.
-    pub fn scrolling_area_query(&self, node: Option<&Node>) -> UntypedRect<i32> {
+    pub fn scrolling_area_query(&self, node: Option<&Node>, can_gc: CanGc) -> UntypedRect<i32> {
         let opaque = node.map(|node| node.to_opaque());
-        if !self.layout_reflow(QueryMsg::ScrollingAreaQuery) {
+        if !self.layout_reflow(QueryMsg::ScrollingAreaQuery, can_gc) {
             return Rect::zero();
         }
         self.layout.borrow().query_scrolling_area(opaque)
@@ -2127,7 +2139,14 @@ impl Window {
     }
 
     // https://drafts.csswg.org/cssom-view/#element-scrolling-members
-    pub fn scroll_node(&self, node: &Node, x_: f64, y_: f64, behavior: ScrollBehavior) {
+    pub fn scroll_node(
+        &self,
+        node: &Node,
+        x_: f64,
+        y_: f64,
+        behavior: ScrollBehavior,
+        can_gc: CanGc,
+    ) {
         // The scroll offsets are immediatly updated since later calls
         // to topScroll and others may access the properties before
         // webrender has a chance to update the offsets.
@@ -2146,6 +2165,7 @@ impl Window {
             scroll_id,
             behavior,
             None,
+            can_gc,
         );
     }
 
@@ -2154,8 +2174,9 @@ impl Window {
         element: TrustedNodeAddress,
         pseudo: Option<PseudoElement>,
         property: PropertyId,
+        can_gc: CanGc,
     ) -> DOMString {
-        if !self.layout_reflow(QueryMsg::ResolvedStyleQuery) {
+        if !self.layout_reflow(QueryMsg::ResolvedStyleQuery, can_gc) {
             return DOMString::new();
         }
 
@@ -2173,8 +2194,9 @@ impl Window {
     pub fn inner_window_dimensions_query(
         &self,
         browsing_context: BrowsingContextId,
+        can_gc: CanGc,
     ) -> Option<Size2D<f32, CSSPixel>> {
-        if !self.layout_reflow(QueryMsg::InnerWindowDimensionsQuery) {
+        if !self.layout_reflow(QueryMsg::InnerWindowDimensionsQuery, can_gc) {
             return None;
         }
         self.layout
@@ -2183,8 +2205,12 @@ impl Window {
     }
 
     #[allow(unsafe_code)]
-    pub fn offset_parent_query(&self, node: &Node) -> (Option<DomRoot<Element>>, UntypedRect<Au>) {
-        if !self.layout_reflow(QueryMsg::OffsetParentQuery) {
+    pub fn offset_parent_query(
+        &self,
+        node: &Node,
+        can_gc: CanGc,
+    ) -> (Option<DomRoot<Element>>, UntypedRect<Au>) {
+        if !self.layout_reflow(QueryMsg::OffsetParentQuery, can_gc) {
             return (None, Rect::zero());
         }
 
@@ -2200,8 +2226,9 @@ impl Window {
         &self,
         node: &Node,
         point_in_node: UntypedPoint2D<f32>,
+        can_gc: CanGc,
     ) -> Option<usize> {
-        if !self.layout_reflow(QueryMsg::TextIndexQuery) {
+        if !self.layout_reflow(QueryMsg::TextIndexQuery, can_gc) {
             return None;
         }
         self.layout
@@ -2252,7 +2279,7 @@ impl Window {
                     load_data.url.clone(),
                     replace,
                 ));
-                doc.check_and_scroll_fragment(fragment);
+                doc.check_and_scroll_fragment(fragment, CanGc::note());
                 let this = Trusted::new(self);
                 let old_url = doc.url().into_string();
                 let new_url = load_data.url.clone().into_string();
diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 52389732cb4..c974417c46c 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -1727,12 +1727,12 @@ impl ScriptThread {
             // https://html.spec.whatwg.org/multipage/#context-lost-steps.
 
             // Run the animation frame callbacks.
-            document.tick_all_animations(should_run_rafs);
+            document.tick_all_animations(should_run_rafs, can_gc);
 
             // Run the resize observer steps.
             let _realm = enter_realm(&*document);
             let mut depth = Default::default();
-            while document.gather_active_resize_observations_at_depth(&depth) {
+            while document.gather_active_resize_observations_at_depth(&depth, can_gc) {
                 // Note: this will reflow the doc.
                 depth = document.broadcast_active_resize_observations(can_gc);
             }
@@ -1889,7 +1889,7 @@ impl ScriptThread {
                 },
                 FromConstellation(ConstellationControlMsg::Viewport(id, rect)) => self
                     .profile_event(ScriptThreadEventCategory::SetViewport, Some(id), || {
-                        self.handle_viewport(id, rect);
+                        self.handle_viewport(id, rect, can_gc);
                     }),
                 FromConstellation(ConstellationControlMsg::TickAllAnimations(
                     pipeline_id,
@@ -2067,13 +2067,17 @@ impl ScriptThread {
 
             let pending_reflows = window.get_pending_reflow_count();
             if pending_reflows > 0 {
-                window.reflow(ReflowGoal::Full, ReflowReason::PendingReflow);
+                window.reflow(ReflowGoal::Full, ReflowReason::PendingReflow, can_gc);
             } else {
                 // Reflow currently happens when explicitly invoked by code that
                 // knows the document could have been modified. This should really
                 // be driven by the compositor on an as-needed basis instead, to
                 // minimize unnecessary work.
-                window.reflow(ReflowGoal::Full, ReflowReason::MissingExplicitReflow);
+                window.reflow(
+                    ReflowGoal::Full,
+                    ReflowReason::MissingExplicitReflow,
+                    can_gc,
+                );
             }
         }
 
@@ -2554,7 +2558,7 @@ impl ScriptThread {
                 self.collect_reports(chan)
             },
             MainThreadScriptMsg::WorkletLoaded(pipeline_id) => {
-                self.handle_worklet_loaded(pipeline_id)
+                self.handle_worklet_loaded(pipeline_id, CanGc::note())
             },
             MainThreadScriptMsg::RegisterPaintWorklet {
                 pipeline_id,
@@ -2840,7 +2844,7 @@ impl ScriptThread {
                 webdriver_handlers::handle_get_css(&documents, pipeline_id, node_id, name, reply)
             },
             WebDriverScriptCommand::GetElementRect(node_id, reply) => {
-                webdriver_handlers::handle_get_rect(&documents, pipeline_id, node_id, reply)
+                webdriver_handlers::handle_get_rect(&documents, pipeline_id, node_id, reply, can_gc)
             },
             WebDriverScriptCommand::GetBoundingClientRect(node_id, reply) => {
                 webdriver_handlers::handle_get_bounding_client_rect(
@@ -2918,11 +2922,11 @@ impl ScriptThread {
         }
     }
 
-    fn handle_viewport(&self, id: PipelineId, rect: Rect<f32>) {
+    fn handle_viewport(&self, id: PipelineId, rect: Rect<f32>, can_gc: CanGc) {
         let document = self.documents.borrow().find_document(id);
         if let Some(document) = document {
             if document.window().set_page_clip_rect_with_new_viewport(rect) {
-                self.rebuild_and_force_reflow(&document, ReflowReason::Viewport);
+                self.rebuild_and_force_reflow(&document, ReflowReason::Viewport, can_gc);
             }
             return;
         }
@@ -3028,7 +3032,7 @@ impl ScriptThread {
         );
         let document = self.documents.borrow().find_document(id);
         if let Some(document) = document {
-            document.set_activity(activity);
+            document.set_activity(activity, CanGc::note());
             return;
         }
         let mut loads = self.incomplete_loads.borrow_mut();
@@ -3443,10 +3447,10 @@ impl ScriptThread {
     }
 
     /// Handles a worklet being loaded. Does nothing if the page no longer exists.
-    fn handle_worklet_loaded(&self, pipeline_id: PipelineId) {
+    fn handle_worklet_loaded(&self, pipeline_id: PipelineId, can_gc: CanGc) {
         let document = self.documents.borrow().find_document(pipeline_id);
         if let Some(document) = document {
-            self.rebuild_and_force_reflow(&document, ReflowReason::WorkletLoaded);
+            self.rebuild_and_force_reflow(&document, ReflowReason::WorkletLoaded, can_gc);
         }
     }
 
@@ -3904,10 +3908,10 @@ impl ScriptThread {
     }
 
     /// Reflows non-incrementally, rebuilding the entire layout tree in the process.
-    fn rebuild_and_force_reflow(&self, document: &Document, reason: ReflowReason) {
+    fn rebuild_and_force_reflow(&self, document: &Document, reason: ReflowReason, can_gc: CanGc) {
         let window = window_from_node(document);
         document.dirty_all_nodes();
-        window.reflow(ReflowGoal::Full, reason);
+        window.reflow(ReflowGoal::Full, reason, can_gc);
     }
 
     /// Queue compositor events for later dispatching as part of a
diff --git a/components/script/timers.rs b/components/script/timers.rs
index a5e491e9180..e4348a1b01f 100644
--- a/components/script/timers.rs
+++ b/components/script/timers.rs
@@ -95,7 +95,7 @@ impl OneshotTimerCallback {
             OneshotTimerCallback::EventSourceTimeout(callback) => callback.invoke(),
             OneshotTimerCallback::JsTimer(task) => task.invoke(this, js_timers),
             OneshotTimerCallback::TestBindingCallback(callback) => callback.invoke(),
-            OneshotTimerCallback::FakeRequestAnimationFrame(callback) => callback.invoke(),
+            OneshotTimerCallback::FakeRequestAnimationFrame(callback) => callback.invoke(can_gc),
             OneshotTimerCallback::RefreshRedirectDue(callback) => callback.invoke(can_gc),
         }
     }
diff --git a/components/script/webdriver_handlers.rs b/components/script/webdriver_handlers.rs
index 489e071908c..a81f1828b76 100644
--- a/components/script/webdriver_handlers.rs
+++ b/components/script/webdriver_handlers.rs
@@ -388,8 +388,8 @@ fn get_element_in_view_center_point(element: &Element, can_gc: CanGc) -> Option<
                 let width = rectangle.Width().round() as i64;
                 let height = rectangle.Height().round() as i64;
 
-                let client_width = body.ClientWidth() as i64;
-                let client_height = body.ClientHeight() as i64;
+                let client_width = body.ClientWidth(can_gc) as i64;
+                let client_height = body.ClientHeight(can_gc) as i64;
 
                 // Steps 2 - 5
                 let left = cmp::max(0, cmp::min(x, x + width));
@@ -881,6 +881,7 @@ pub fn handle_get_rect(
     pipeline: PipelineId,
     element_id: String,
     reply: IpcSender<Result<Rect<f64>, ErrorStatus>>,
+    can_gc: CanGc,
 ) {
     reply
         .send(
@@ -892,15 +893,15 @@ pub fn handle_get_rect(
                         let mut x = 0;
                         let mut y = 0;
 
-                        let mut offset_parent = html_element.GetOffsetParent();
+                        let mut offset_parent = html_element.GetOffsetParent(can_gc);
 
                         // Step 2
                         while let Some(element) = offset_parent {
                             offset_parent = match element.downcast::<HTMLElement>() {
                                 Some(elem) => {
-                                    x += elem.OffsetLeft();
-                                    y += elem.OffsetTop();
-                                    elem.GetOffsetParent()
+                                    x += elem.OffsetLeft(can_gc);
+                                    y += elem.OffsetTop(can_gc);
+                                    elem.GetOffsetParent(can_gc)
                                 },
                                 None => None,
                             };
@@ -909,8 +910,8 @@ pub fn handle_get_rect(
                         Ok(Rect::new(
                             Point2D::new(x as f64, y as f64),
                             Size2D::new(
-                                html_element.OffsetWidth() as f64,
-                                html_element.OffsetHeight() as f64,
+                                html_element.OffsetWidth(can_gc) as f64,
+                                html_element.OffsetHeight(can_gc) as f64,
                             ),
                         ))
                     },