Remove DomRefCell wrapper for canvas_state from CanvasRenderingContext2D

1 files changed, 72 insertions, 118 deletions

diff --git a/components/script/dom/canvasrenderingcontext2d.rs b/components/script/dom/canvasrenderingcontext2d.rs
index 3dff7403464..2270fdeb65a 100644
--- a/components/script/dom/canvasrenderingcontext2d.rs
+++ b/components/script/dom/canvasrenderingcontext2d.rs
@@ -36,7 +36,7 @@ pub struct CanvasRenderingContext2D {
     /// For rendering contexts created by an HTML canvas element, this is Some,
     /// for ones created by a paint worklet, this is None.
     canvas: Option<Dom<HTMLCanvasElement>>,
-    canvas_state: DomRefCell<CanvasState>,
+    canvas_state: CanvasState,
 }
 
 impl CanvasRenderingContext2D {
@@ -48,10 +48,10 @@ impl CanvasRenderingContext2D {
         CanvasRenderingContext2D {
             reflector_: Reflector::new(),
             canvas: canvas.map(Dom::from_ref),
-            canvas_state: DomRefCell::new(CanvasState::new(
+            canvas_state: CanvasState::new(
                 global,
                 Size2D::new(size.width as u64, size.height as u64),
-            )),
+            ),
         }
     }
 
@@ -72,11 +72,10 @@ impl CanvasRenderingContext2D {
     pub fn set_bitmap_dimensions(&self, size: Size2D<u32>) {
         self.reset_to_initial_state();
         self.canvas_state
-            .borrow()
             .get_ipc_renderer()
             .send(CanvasMsg::Recreate(
                 size.to_u64(),
-                self.canvas_state.borrow().get_canvas_id(),
+                self.canvas_state.get_canvas_id(),
             ))
             .unwrap();
     }
@@ -84,12 +83,8 @@ impl CanvasRenderingContext2D {
     //  TODO: This duplicates functionality in canvas state
     // https://html.spec.whatwg.org/multipage/#reset-the-rendering-context-to-its-default-state
     fn reset_to_initial_state(&self) {
-        self.canvas_state
-            .borrow()
-            .get_saved_state()
-            .borrow_mut()
-            .clear();
-        *self.canvas_state.borrow().get_state().borrow_mut() = CanvasContextState::new();
+        self.canvas_state.get_saved_state().borrow_mut().clear();
+        *self.canvas_state.get_state().borrow_mut() = CanvasContextState::new();
     }
     /*
         pub fn get_canvas_state(&self) -> Ref<CanvasState> {
@@ -98,41 +93,36 @@ impl CanvasRenderingContext2D {
     */
 
     pub fn set_canvas_bitmap_dimensions(&self, size: Size2D<u64>) {
-        self.canvas_state.borrow().set_bitmap_dimensions(size);
+        self.canvas_state.set_bitmap_dimensions(size);
     }
 
     pub fn mark_as_dirty(&self) {
         self.canvas_state
-            .borrow()
             .mark_as_dirty(self.canvas.as_ref().map(|c| &**c))
     }
 
     pub fn take_missing_image_urls(&self) -> Vec<ServoUrl> {
         mem::replace(
-            &mut self
-                .canvas_state
-                .borrow()
-                .get_missing_image_urls()
-                .borrow_mut(),
+            &mut self.canvas_state.get_missing_image_urls().borrow_mut(),
             vec![],
         )
     }
 
     pub fn get_canvas_id(&self) -> CanvasId {
-        self.canvas_state.borrow().get_canvas_id()
+        self.canvas_state.get_canvas_id()
     }
 
     pub fn send_canvas_2d_msg(&self, msg: Canvas2dMsg) {
-        self.canvas_state.borrow().send_canvas_2d_msg(msg)
+        self.canvas_state.send_canvas_2d_msg(msg)
     }
 
     // TODO: Remove this
     pub fn get_ipc_renderer(&self) -> IpcSender<CanvasMsg> {
-        self.canvas_state.borrow().get_ipc_renderer().clone()
+        self.canvas_state.get_ipc_renderer().clone()
     }
 
     pub fn origin_is_clean(&self) -> bool {
-        self.canvas_state.borrow().origin_is_clean()
+        self.canvas_state.origin_is_clean()
     }
 
     pub fn get_rect(&self, rect: Rect<u32>) -> Vec<u8> {
@@ -140,7 +130,7 @@ impl CanvasRenderingContext2D {
             Point2D::new(rect.origin.x as u64, rect.origin.y as u64),
             Size2D::new(rect.size.width as u64, rect.size.height as u64),
         );
-        self.canvas_state.borrow().get_rect(
+        self.canvas_state.get_rect(
             self.canvas
                 .as_ref()
                 .map_or(Size2D::zero(), |c| c.get_size().to_u64()),
@@ -158,11 +148,7 @@ pub trait LayoutCanvasRenderingContext2DHelpers {
 impl LayoutCanvasRenderingContext2DHelpers for LayoutDom<'_, CanvasRenderingContext2D> {
     #[allow(unsafe_code)]
     unsafe fn get_ipc_renderer(self) -> IpcSender<CanvasMsg> {
-        (*self.unsafe_get())
-            .canvas_state
-            .borrow_for_layout()
-            .get_ipc_renderer()
-            .clone()
+        (*self.unsafe_get()).canvas_state.get_ipc_renderer().clone()
     }
 
     #[allow(unsafe_code)]
@@ -170,12 +156,7 @@ impl LayoutCanvasRenderingContext2DHelpers for LayoutDom<'_, CanvasRenderingCont
         // FIXME(nox): This relies on the fact that CanvasState::get_canvas_id
         // does nothing fancy but it would be easier to trust a
         // LayoutDom<_>-like type that would wrap the &CanvasState.
-        unsafe {
-            self.unsafe_get()
-                .canvas_state
-                .borrow_for_layout()
-                .get_canvas_id()
-        }
+        unsafe { self.unsafe_get().canvas_state.get_canvas_id() }
     }
 }
 
@@ -198,141 +179,135 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-save
     fn Save(&self) {
-        self.canvas_state.borrow().save()
+        self.canvas_state.save()
     }
 
     #[allow(unrooted_must_root)]
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-restore
     fn Restore(&self) {
-        self.canvas_state.borrow().restore()
+        self.canvas_state.restore()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-scale
     fn Scale(&self, x: f64, y: f64) {
-        self.canvas_state.borrow().scale(x, y)
+        self.canvas_state.scale(x, y)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-rotate
     fn Rotate(&self, angle: f64) {
-        self.canvas_state.borrow().rotate(angle)
+        self.canvas_state.rotate(angle)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-translate
     fn Translate(&self, x: f64, y: f64) {
-        self.canvas_state.borrow().translate(x, y)
+        self.canvas_state.translate(x, y)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-transform
     fn Transform(&self, a: f64, b: f64, c: f64, d: f64, e: f64, f: f64) {
-        self.canvas_state.borrow().transform(a, b, c, d, e, f)
+        self.canvas_state.transform(a, b, c, d, e, f)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-gettransform
     fn GetTransform(&self) -> DomRoot<DOMMatrix> {
-        self.canvas_state.borrow().get_transform(&self.global())
+        self.canvas_state.get_transform(&self.global())
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-settransform
     fn SetTransform(&self, a: f64, b: f64, c: f64, d: f64, e: f64, f: f64) {
-        self.canvas_state.borrow().set_transform(a, b, c, d, e, f)
+        self.canvas_state.set_transform(a, b, c, d, e, f)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-resettransform
     fn ResetTransform(&self) {
-        self.canvas_state.borrow().reset_transform()
+        self.canvas_state.reset_transform()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-globalalpha
     fn GlobalAlpha(&self) -> f64 {
-        self.canvas_state.borrow().global_alpha()
+        self.canvas_state.global_alpha()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-globalalpha
     fn SetGlobalAlpha(&self, alpha: f64) {
-        self.canvas_state.borrow().set_global_alpha(alpha)
+        self.canvas_state.set_global_alpha(alpha)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-globalcompositeoperation
     fn GlobalCompositeOperation(&self) -> DOMString {
-        self.canvas_state.borrow().global_composite_operation()
+        self.canvas_state.global_composite_operation()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-globalcompositeoperation
     fn SetGlobalCompositeOperation(&self, op_str: DOMString) {
-        self.canvas_state
-            .borrow()
-            .set_global_composite_operation(op_str)
+        self.canvas_state.set_global_composite_operation(op_str)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-fillrect
     fn FillRect(&self, x: f64, y: f64, width: f64, height: f64) {
-        self.canvas_state.borrow().fill_rect(x, y, width, height);
+        self.canvas_state.fill_rect(x, y, width, height);
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-clearrect
     fn ClearRect(&self, x: f64, y: f64, width: f64, height: f64) {
-        self.canvas_state.borrow().clear_rect(x, y, width, height);
+        self.canvas_state.clear_rect(x, y, width, height);
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokerect
     fn StrokeRect(&self, x: f64, y: f64, width: f64, height: f64) {
-        self.canvas_state.borrow().stroke_rect(x, y, width, height);
+        self.canvas_state.stroke_rect(x, y, width, height);
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-beginpath
     fn BeginPath(&self) {
-        self.canvas_state.borrow().begin_path()
+        self.canvas_state.begin_path()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-closepath
     fn ClosePath(&self) {
-        self.canvas_state.borrow().close_path()
+        self.canvas_state.close_path()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-fill
     fn Fill(&self, fill_rule: CanvasFillRule) {
-        self.canvas_state.borrow().fill(fill_rule);
+        self.canvas_state.fill(fill_rule);
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-stroke
     fn Stroke(&self) {
-        self.canvas_state.borrow().stroke();
+        self.canvas_state.stroke();
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-clip
     fn Clip(&self, fill_rule: CanvasFillRule) {
-        self.canvas_state.borrow().clip(fill_rule)
+        self.canvas_state.clip(fill_rule)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-ispointinpath
     fn IsPointInPath(&self, x: f64, y: f64, fill_rule: CanvasFillRule) -> bool {
         self.canvas_state
-            .borrow()
             .is_point_in_path(&self.global(), x, y, fill_rule)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-filltext
     fn FillText(&self, text: DOMString, x: f64, y: f64, max_width: Option<f64>) {
-        self.canvas_state.borrow().fill_text(text, x, y, max_width);
+        self.canvas_state.fill_text(text, x, y, max_width);
         self.mark_as_dirty();
     }
 
     // https://html.spec.whatwg.org/multipage/#textmetrics
     fn MeasureText(&self, text: DOMString) -> DomRoot<TextMetrics> {
-        self.canvas_state
-            .borrow()
-            .measure_text(&self.global(), text)
+        self.canvas_state.measure_text(&self.global(), text)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-drawimage
     fn DrawImage(&self, image: CanvasImageSource, dx: f64, dy: f64) -> ErrorResult {
         self.canvas_state
-            .borrow()
             .draw_image(self.canvas.as_ref().map(|c| &**c), image, dx, dy)
     }
 
@@ -345,14 +320,8 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         dw: f64,
         dh: f64,
     ) -> ErrorResult {
-        self.canvas_state.borrow().draw_image_(
-            self.canvas.as_ref().map(|c| &**c),
-            image,
-            dx,
-            dy,
-            dw,
-            dh,
-        )
+        self.canvas_state
+            .draw_image_(self.canvas.as_ref().map(|c| &**c), image, dx, dy, dw, dh)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-drawimage
@@ -368,7 +337,7 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         dw: f64,
         dh: f64,
     ) -> ErrorResult {
-        self.canvas_state.borrow().draw_image__(
+        self.canvas_state.draw_image__(
             self.canvas.as_ref().map(|c| &**c),
             image,
             sx,
@@ -384,41 +353,38 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-moveto
     fn MoveTo(&self, x: f64, y: f64) {
-        self.canvas_state.borrow().move_to(x, y)
+        self.canvas_state.move_to(x, y)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-lineto
     fn LineTo(&self, x: f64, y: f64) {
-        self.canvas_state.borrow().line_to(x, y)
+        self.canvas_state.line_to(x, y)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-rect
     fn Rect(&self, x: f64, y: f64, width: f64, height: f64) {
-        self.canvas_state.borrow().rect(x, y, width, height)
+        self.canvas_state.rect(x, y, width, height)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-quadraticcurveto
     fn QuadraticCurveTo(&self, cpx: f64, cpy: f64, x: f64, y: f64) {
-        self.canvas_state
-            .borrow()
-            .quadratic_curve_to(cpx, cpy, x, y)
+        self.canvas_state.quadratic_curve_to(cpx, cpy, x, y)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-beziercurveto
     fn BezierCurveTo(&self, cp1x: f64, cp1y: f64, cp2x: f64, cp2y: f64, x: f64, y: f64) {
         self.canvas_state
-            .borrow()
             .bezier_curve_to(cp1x, cp1y, cp2x, cp2y, x, y)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-arc
     fn Arc(&self, x: f64, y: f64, r: f64, start: f64, end: f64, ccw: bool) -> ErrorResult {
-        self.canvas_state.borrow().arc(x, y, r, start, end, ccw)
+        self.canvas_state.arc(x, y, r, start, end, ccw)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-arcto
     fn ArcTo(&self, cp1x: f64, cp1y: f64, cp2x: f64, cp2y: f64, r: f64) -> ErrorResult {
-        self.canvas_state.borrow().arc_to(cp1x, cp1y, cp2x, cp2y, r)
+        self.canvas_state.arc_to(cp1x, cp1y, cp2x, cp2y, r)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-ellipse
@@ -434,63 +400,55 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         ccw: bool,
     ) -> ErrorResult {
         self.canvas_state
-            .borrow()
             .ellipse(x, y, rx, ry, rotation, start, end, ccw)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-imagesmoothingenabled
     fn ImageSmoothingEnabled(&self) -> bool {
-        self.canvas_state.borrow().image_smoothing_enabled()
+        self.canvas_state.image_smoothing_enabled()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-imagesmoothingenabled
     fn SetImageSmoothingEnabled(&self, value: bool) {
-        self.canvas_state
-            .borrow()
-            .set_image_smoothing_enabled(value)
+        self.canvas_state.set_image_smoothing_enabled(value)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
     fn StrokeStyle(&self) -> StringOrCanvasGradientOrCanvasPattern {
-        self.canvas_state.borrow().stroke_style()
+        self.canvas_state.stroke_style()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
     fn SetStrokeStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
         self.canvas_state
-            .borrow()
             .set_stroke_style(self.canvas.as_ref().map(|c| &**c), value)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
     fn FillStyle(&self) -> StringOrCanvasGradientOrCanvasPattern {
-        self.canvas_state.borrow().fill_style()
+        self.canvas_state.fill_style()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-strokestyle
     fn SetFillStyle(&self, value: StringOrCanvasGradientOrCanvasPattern) {
         self.canvas_state
-            .borrow()
             .set_fill_style(self.canvas.as_ref().map(|c| &**c), value)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-createimagedata
     fn CreateImageData(&self, sw: i32, sh: i32) -> Fallible<DomRoot<ImageData>> {
-        self.canvas_state
-            .borrow()
-            .create_image_data(&self.global(), sw, sh)
+        self.canvas_state.create_image_data(&self.global(), sw, sh)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-createimagedata
     fn CreateImageData_(&self, imagedata: &ImageData) -> Fallible<DomRoot<ImageData>> {
         self.canvas_state
-            .borrow()
             .create_image_data_(&self.global(), imagedata)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-getimagedata
     fn GetImageData(&self, sx: i32, sy: i32, sw: i32, sh: i32) -> Fallible<DomRoot<ImageData>> {
-        self.canvas_state.borrow().get_image_data(
+        self.canvas_state.get_image_data(
             self.canvas
                 .as_ref()
                 .map_or(Size2D::zero(), |c| c.get_size().to_u64()),
@@ -504,7 +462,7 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-putimagedata
     fn PutImageData(&self, imagedata: &ImageData, dx: i32, dy: i32) {
-        self.canvas_state.borrow().put_image_data(
+        self.canvas_state.put_image_data(
             self.canvas
                 .as_ref()
                 .map_or(Size2D::zero(), |c| c.get_size().to_u64()),
@@ -526,7 +484,7 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         dirty_width: i32,
         dirty_height: i32,
     ) {
-        self.canvas_state.borrow().put_image_data_(
+        self.canvas_state.put_image_data_(
             self.canvas
                 .as_ref()
                 .map_or(Size2D::zero(), |c| c.get_size().to_u64()),
@@ -550,7 +508,6 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         y1: Finite<f64>,
     ) -> DomRoot<CanvasGradient> {
         self.canvas_state
-            .borrow()
             .create_linear_gradient(&self.global(), x0, y0, x1, y1)
     }
 
@@ -565,7 +522,6 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         r1: Finite<f64>,
     ) -> Fallible<DomRoot<CanvasGradient>> {
         self.canvas_state
-            .borrow()
             .create_radial_gradient(&self.global(), x0, y0, r0, x1, y1, r1)
     }
 
@@ -576,88 +532,87 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         repetition: DOMString,
     ) -> Fallible<Option<DomRoot<CanvasPattern>>> {
         self.canvas_state
-            .borrow()
             .create_pattern(&self.global(), image, repetition)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-linewidth
     fn LineWidth(&self) -> f64 {
-        self.canvas_state.borrow().line_width()
+        self.canvas_state.line_width()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-linewidth
     fn SetLineWidth(&self, width: f64) {
-        self.canvas_state.borrow().set_line_width(width)
+        self.canvas_state.set_line_width(width)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-linecap
     fn LineCap(&self) -> CanvasLineCap {
-        self.canvas_state.borrow().line_cap()
+        self.canvas_state.line_cap()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-linecap
     fn SetLineCap(&self, cap: CanvasLineCap) {
-        self.canvas_state.borrow().set_line_cap(cap)
+        self.canvas_state.set_line_cap(cap)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-linejoin
     fn LineJoin(&self) -> CanvasLineJoin {
-        self.canvas_state.borrow().line_join()
+        self.canvas_state.line_join()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-linejoin
     fn SetLineJoin(&self, join: CanvasLineJoin) {
-        self.canvas_state.borrow().set_line_join(join)
+        self.canvas_state.set_line_join(join)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-miterlimit
     fn MiterLimit(&self) -> f64 {
-        self.canvas_state.borrow().miter_limit()
+        self.canvas_state.miter_limit()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-miterlimit
     fn SetMiterLimit(&self, limit: f64) {
-        self.canvas_state.borrow().set_miter_limit(limit)
+        self.canvas_state.set_miter_limit(limit)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowoffsetx
     fn ShadowOffsetX(&self) -> f64 {
-        self.canvas_state.borrow().shadow_offset_x()
+        self.canvas_state.shadow_offset_x()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowoffsetx
     fn SetShadowOffsetX(&self, value: f64) {
-        self.canvas_state.borrow().set_shadow_offset_x(value)
+        self.canvas_state.set_shadow_offset_x(value)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowoffsety
     fn ShadowOffsetY(&self) -> f64 {
-        self.canvas_state.borrow().shadow_offset_y()
+        self.canvas_state.shadow_offset_y()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowoffsety
     fn SetShadowOffsetY(&self, value: f64) {
-        self.canvas_state.borrow().set_shadow_offset_y(value)
+        self.canvas_state.set_shadow_offset_y(value)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowblur
     fn ShadowBlur(&self) -> f64 {
-        self.canvas_state.borrow().shadow_blur()
+        self.canvas_state.shadow_blur()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowblur
     fn SetShadowBlur(&self, value: f64) {
-        self.canvas_state.borrow().set_shadow_blur(value)
+        self.canvas_state.set_shadow_blur(value)
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowcolor
     fn ShadowColor(&self) -> DOMString {
-        self.canvas_state.borrow().shadow_color()
+        self.canvas_state.shadow_color()
     }
 
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-shadowcolor
     fn SetShadowColor(&self, value: DOMString) {
-        self.canvas_state.borrow().set_shadow_color(value)
+        self.canvas_state.set_shadow_color(value)
     }
 }
 
@@ -665,9 +620,8 @@ impl Drop for CanvasRenderingContext2D {
     fn drop(&mut self) {
         if let Err(err) = self
             .canvas_state
-            .borrow()
             .get_ipc_renderer()
-            .send(CanvasMsg::Close(self.canvas_state.borrow().get_canvas_id()))
+            .send(CanvasMsg::Close(self.canvas_state.get_canvas_id()))
         {
             warn!("Could not close canvas: {}", err)
         }