Allow animation of non-interpolable properties in CSS Animations

Source/core/css/CSSProperties.in

Index: Source/core/css/CSSProperties.in
diff --git a/Source/core/css/CSSProperties.in b/Source/core/css/CSSProperties.in
index bf8c2780a81c266bfc310a3634bfc7d75c33e3e0..c3e618a8d2680124d6ee4f9624c6920b683ae57c 100644
--- a/Source/core/css/CSSProperties.in
+++ b/Source/core/css/CSSProperties.in
@@ -20,10 +20,10 @@
 
 // Flags which go into CSSPropertyMetadata:
 // - interpolable
-// The interpolable flag indicates whether a property can be animated by CSS
-// animations and transitions. If this flag is set, the property should also be
-// added to the switch statements in AnimatedStyleBuilder, CSSPropertyEquality,
-// and CSSAnimatableValueFactory.
+// The interpolable flag indicates whether a property can be animated smoothly.
+// If this flag is set, the property should also be added to the switch
+// statements in AnimatedStyleBuilder, CSSPropertyEquality and
+// CSSAnimatableValueFactory.
 // - inherited
 // The property will inherit by default if no value is specified, typically
 // mentioned in specifications as "Inherited: yes"