Web Animations CSS: Support animation of fill and stroke

Source/core/animation/AnimatableValue.h

Index: Source/core/animation/AnimatableValue.h
diff --git a/Source/core/animation/AnimatableValue.h b/Source/core/animation/AnimatableValue.h
index c45d471041fd1fc4fa45a78661819a86d5abd453..4eaae3f497e76495b7c1867f2fa0cbfc8c6f6042 100644
--- a/Source/core/animation/AnimatableValue.h
+++ b/Source/core/animation/AnimatableValue.h
@@ -55,6 +55,7 @@ public:
     bool isLengthSize() const { return type() == TypeLengthSize; }
     bool isNeutral() const { return type() == TypeNeutral; }
     bool isShapeValue() const { return type() == TypeShapeValue; }
+    bool isSVGPaint() const { return type() == TypeSVGPaint; }
     bool isTransform() const { return type() == TypeTransform; }
     bool isUnknown() const { return type() == TypeUnknown; }
     bool isVisibility() const { return type() == TypeVisibility; }
@@ -70,6 +71,7 @@ protected:
         TypeLengthSize,
         TypeNeutral,
         TypeShapeValue,
+        TypeSVGPaint,
         TypeTransform,
         TypeUnknown,
         TypeVisibility,