Recompute viewport-dependent styles on viewport size change

Fixes #8754.

9 files changed, 71 insertions, 57 deletions

diff --git a/components/script/dom/htmlmetaelement.rs b/components/script/dom/htmlmetaelement.rs
index 779c5c79e07..73cc5c73aa0 100644
--- a/components/script/dom/htmlmetaelement.rs
+++ b/components/script/dom/htmlmetaelement.rs
@@ -73,6 +73,9 @@ impl HTMLMetaElement {
                         rules: vec![CSSRule::Viewport(translated_rule)],
                         origin: Origin::Author,
                         media: None,
+                        // Viewport constraints are always recomputed on resize; they don't need to
+                        // force all styles to be recomputed.
+                        dirty_on_viewport_size_change: false,
                     }));
                     let doc = document_from_node(self);
                     doc.invalidate_stylesheets();
diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index 6a2284d2043..ce25b3ebabf 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -176,7 +176,7 @@ name = "canvas_traits"
 version = "0.0.1"
 dependencies = [
  "azure 0.4.3 (git+https://github.com/servo/rust-azure)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -369,7 +369,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cssparser"
-version = "0.5.4"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1046,7 +1046,7 @@ dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
@@ -1246,7 +1246,7 @@ name = "msg"
 version = "0.0.1"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1692,7 +1692,7 @@ dependencies = [
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
  "caseless 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "devtools_traits 0.0.1",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1776,7 +1776,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1963,7 +1963,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1991,7 +1991,7 @@ name = "style_tests"
 version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "plugins 0.0.1",
@@ -2007,7 +2007,7 @@ dependencies = [
 name = "style_traits"
 version = "0.0.1"
 dependencies = [
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2168,7 +2168,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
index 2aebd38d239..47a308192bf 100644
--- a/components/style/Cargo.toml
+++ b/components/style/Cargo.toml
@@ -22,7 +22,7 @@ path = "../style_traits"
 [dependencies]
 app_units = {version = "0.2.3", features = ["plugins"]}
 bitflags = "0.3"
-cssparser = {version = "0.5.4", features = ["heap_size", "serde-serialization"]}
+cssparser = {version = "0.5.5", features = ["heap_size", "serde-serialization"]}
 encoding = "0.2"
 euclid = {version = "0.6.4", features = ["plugins"]}
 fnv = "1.0"
diff --git a/components/style/selector_matching.rs b/components/style/selector_matching.rs
index abcfd65dfb8..dd9a4cf68af 100644
--- a/components/style/selector_matching.rs
+++ b/components/style/selector_matching.rs
@@ -226,12 +226,16 @@ impl<Impl: SelectorImplExt> Stylist<Impl> {
         if let Some(ref constraints) = self.viewport_constraints {
             device = Device::new(MediaType::Screen, constraints.size);
         }
-        let is_device_dirty = self.is_device_dirty || stylesheets.iter()
-            .flat_map(|stylesheet| stylesheet.rules().media())
-            .any(|media_rule| media_rule.evaluate(&self.device) != media_rule.evaluate(&device));
+
+        let size_changed = device.viewport_size != self.device.viewport_size;
+
+        self.is_device_dirty |= stylesheets.iter().any(|stylesheet| {
+                (size_changed && stylesheet.dirty_on_viewport_size_change) ||
+                stylesheet.rules().media().any(|media_rule|
+                    media_rule.evaluate(&self.device) != media_rule.evaluate(&device))
+        });
 
         self.device = device;
-        self.is_device_dirty |= is_device_dirty;
     }
 
     pub fn viewport_constraints(&self) -> &Option<ViewportConstraints> {
diff --git a/components/style/stylesheets.rs b/components/style/stylesheets.rs
index 44efaa6f3f2..0e40799eb2b 100644
--- a/components/style/stylesheets.rs
+++ b/components/style/stylesheets.rs
@@ -46,6 +46,7 @@ pub struct Stylesheet<Impl: SelectorImpl> {
     /// List of media associated with the Stylesheet, if any.
     pub media: Option<MediaQueryList>,
     pub origin: Origin,
+    pub dirty_on_viewport_size_change: bool,
 }
 
 
@@ -113,27 +114,31 @@ impl<Impl: SelectorImpl> Stylesheet<Impl> {
             _impl: PhantomData,
         };
         let mut input = Parser::new(css);
-        let mut iter = RuleListParser::new_for_stylesheet(&mut input, rule_parser);
+        input.look_for_viewport_percentages();
+
         let mut rules = Vec::new();
-        while let Some(result) = iter.next() {
-            match result {
-                Ok(rule) => {
-                    if let CSSRule::Namespace(ref prefix, ref namespace) = rule {
-                        if let Some(prefix) = prefix.as_ref() {
-                            iter.parser.context.selector_context.namespace_prefixes.insert(
-                                prefix.clone(), namespace.clone());
-                        } else {
-                            iter.parser.context.selector_context.default_namespace =
-                                Some(namespace.clone());
+        {
+            let mut iter = RuleListParser::new_for_stylesheet(&mut input, rule_parser);
+            while let Some(result) = iter.next() {
+                match result {
+                    Ok(rule) => {
+                        if let CSSRule::Namespace(ref prefix, ref namespace) = rule {
+                            if let Some(prefix) = prefix.as_ref() {
+                                iter.parser.context.selector_context.namespace_prefixes.insert(
+                                    prefix.clone(), namespace.clone());
+                            } else {
+                                iter.parser.context.selector_context.default_namespace =
+                                    Some(namespace.clone());
+                            }
                         }
+                        rules.push(rule);
+                    }
+                    Err(range) => {
+                        let pos = range.start;
+                        let message = format!("Invalid rule: '{}'", iter.input.slice(range));
+                        let context = ParserContext::new(origin, &base_url, error_reporter.clone());
+                        log_css_error(iter.input, pos, &*message, &context);
                     }
-                    rules.push(rule);
-                }
-                Err(range) => {
-                    let pos = range.start;
-                    let message = format!("Invalid rule: '{}'", iter.input.slice(range));
-                    let context = ParserContext::new(origin, &base_url, error_reporter.clone());
-                    log_css_error(iter.input, pos, &*message, &context);
                 }
             }
         }
@@ -141,6 +146,7 @@ impl<Impl: SelectorImpl> Stylesheet<Impl> {
             origin: origin,
             rules: rules,
             media: None,
+            dirty_on_viewport_size_change: input.seen_viewport_percentages(),
         }
     }
 
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index d3f1f4bec43..2d918b277d6 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -161,7 +161,7 @@ name = "canvas_traits"
 version = "0.0.1"
 dependencies = [
  "azure 0.4.3 (git+https://github.com/servo/rust-azure)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -339,7 +339,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cssparser"
-version = "0.5.4"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -966,7 +966,7 @@ dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
@@ -1166,7 +1166,7 @@ name = "msg"
 version = "0.0.1"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1567,7 +1567,7 @@ dependencies = [
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
  "caseless 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "devtools_traits 0.0.1",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1642,7 +1642,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1867,7 +1867,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1894,7 +1894,7 @@ dependencies = [
 name = "style_traits"
 version = "0.0.1"
 dependencies = [
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2055,7 +2055,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/ports/geckolib/Cargo.lock b/ports/geckolib/Cargo.lock
index b2bd3864ca9..19e09bfd209 100644
--- a/ports/geckolib/Cargo.lock
+++ b/ports/geckolib/Cargo.lock
@@ -4,7 +4,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -79,7 +79,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cssparser"
-version = "0.5.4"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -364,7 +364,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -422,7 +422,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -449,7 +449,7 @@ dependencies = [
 name = "style_traits"
 version = "0.0.1"
 dependencies = [
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -528,7 +528,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/ports/gonk/Cargo.lock b/ports/gonk/Cargo.lock
index 6da00e67649..dfae40d76dd 100644
--- a/ports/gonk/Cargo.lock
+++ b/ports/gonk/Cargo.lock
@@ -154,7 +154,7 @@ name = "canvas_traits"
 version = "0.0.1"
 dependencies = [
  "azure 0.4.3 (git+https://github.com/servo/rust-azure)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -332,7 +332,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cssparser"
-version = "0.5.4"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -948,7 +948,7 @@ dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
@@ -1148,7 +1148,7 @@ name = "msg"
 version = "0.0.1"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1549,7 +1549,7 @@ dependencies = [
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
  "caseless 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "devtools_traits 0.0.1",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1624,7 +1624,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1847,7 +1847,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1874,7 +1874,7 @@ dependencies = [
 name = "style_traits"
 version = "0.0.1"
 dependencies = [
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2035,7 +2035,7 @@ version = "0.0.1"
 dependencies = [
  "app_units 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cssparser 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/tests/unit/style/stylesheets.rs b/tests/unit/style/stylesheets.rs
index 46e1f89aaff..1bed8f94a1d 100644
--- a/tests/unit/style/stylesheets.rs
+++ b/tests/unit/style/stylesheets.rs
@@ -29,6 +29,7 @@ fn test_parse_stylesheet() {
     assert_eq!(stylesheet, Stylesheet {
         origin: Origin::UserAgent,
         media: None,
+        dirty_on_viewport_size_change: false,
         rules: vec![
             CSSRule::Namespace(None, ns!(html)),
             CSSRule::Style(StyleRule {