Implement animations for Independent CSS Transform Properties

Source/platform/transforms/TransformOperation.h

Index: Source/platform/transforms/TransformOperation.h
diff --git a/Source/platform/transforms/TransformOperation.h b/Source/platform/transforms/TransformOperation.h
index b131f3ae5811df844eeaa1fc1c3b6cc3a2b3a2cd..2b4a5e4e0d3691db183d7af636a478c8e2bf345c 100644
--- a/Source/platform/transforms/TransformOperation.h
+++ b/Source/platform/transforms/TransformOperation.h
@@ -81,8 +81,13 @@ public:
     }
 
     virtual bool dependsOnBoxSize() const { return false; }
+    virtual bool isMatchingOperationType() const { return false; }
+
 };
 
+#define DEFINE_TRANSFORM_TYPE_CASTS(thisType, predicate) \
+    DEFINE_TYPE_CASTS(thisType, TransformOperation, transform, transform->predicate, transform.predicate)
+
 } // namespace blink
 
 #endif // TransformOperation_h