style: sync changes from mozilla-central.

components/style/properties/longhands/box.mako.rs

@@ -379,7 +379,7 @@ ${helpers.predefined_type(
     "OffsetPath",
     "computed::OffsetPath::none()",
     products="gecko",
-    animation_value_type="none",
+    animation_value_type="ComputedValue",
     gecko_pref="layout.css.motion-path.enabled",
     flags="CREATES_STACKING_CONTEXT FIXPOS_CB",
     spec="https://drafts.fxtf.org/motion-1/#offset-path-property",

components/style/values/animated/mod.rs

@@ -392,3 +392,14 @@ where
         ))
     }
 }
+
+impl<T> ToAnimatedZero for Box<[T]>
+where
+    T: ToAnimatedZero,
+{
+    #[inline]
+    fn to_animated_zero(&self) -> Result<Self, ()> {
+        let v = self.iter().map(|v| v.to_animated_zero()).collect::<Result<Vec<_>, _>>()?;
+        Ok(v.into_boxed_slice())
+    }
+}

components/style/values/generics/basic_shape.rs

@@ -54,7 +54,6 @@ pub enum ShapeSource<BasicShape, ReferenceBox, ImageOrUrl> {
     Shape(BasicShape, Option<ReferenceBox>),
     #[animation(error)]
     Box(ReferenceBox),
-    #[animation(error)]
     #[css(function)]
     Path(Path),
     #[animation(error)]
@@ -152,10 +151,12 @@ pub enum FillRule {
 ///
 /// https://drafts.csswg.org/css-shapes-2/#funcdef-path
 #[css(comma)]
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(Animate, Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo,
+         ToComputedValue, ToCss)]
 pub struct Path {
     /// The filling rule for the svg path.
     #[css(skip_if = "fill_is_default")]
+    #[animation(constant)]
     pub fill: FillRule,
     /// The svg path data.
     pub path: SVGPathData,
@@ -177,6 +178,13 @@ where
             {
                 this.compute_squared_distance(other)
             },
+            (
+                &ShapeSource::Path(ref this),
+                &ShapeSource::Path(ref other),
+            ) if this.fill == other.fill =>
+            {
+                this.path.compute_squared_distance(&other.path)
+            }
             _ => Err(()),
         }
     }

components/style/values/specified/motion.rs

@@ -12,14 +12,16 @@ use values::specified::SVGPathData;
 /// The offset-path value.
 ///
 /// https://drafts.fxtf.org/motion-1/#offset-path-property
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(Animate, Clone, ComputeSquaredDistance, Debug, MallocSizeOf, PartialEq,
+         SpecifiedValueInfo, ToAnimatedZero, ToComputedValue, ToCss)]
 pub enum OffsetPath {
     // We could merge SVGPathData into ShapeSource, so we could reuse them. However,
     // we don't want to support other value for offset-path, so use SVGPathData only for now.
     /// Path value for path(<string>).
     #[css(function)]
     Path(SVGPathData),
     /// None value.
+    #[animation(error)]
     None,
     // Bug 1186329: Implement ray(), <basic-shape>, <geometry-box>, and <url>.
 }