Implement animations for Independent CSS Transform Properties

Source/platform/transforms/ScaleTransformOperation.h

Index: Source/platform/transforms/ScaleTransformOperation.h
diff --git a/Source/platform/transforms/ScaleTransformOperation.h b/Source/platform/transforms/ScaleTransformOperation.h
index 4b481c46a3d5e84357cfef7bb1ee6f490fc09c79..e1dce9778946f90aeb0e991d9e9519c2e98fe0a4 100644
--- a/Source/platform/transforms/ScaleTransformOperation.h
+++ b/Source/platform/transforms/ScaleTransformOperation.h
@@ -51,6 +51,9 @@ public:
     {
         transform.scale3d(m_x, m_y, m_z);
     }
+    virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override;
+
+    virtual bool isMatchingOperationType() const override { return type() == Scale || type() == ScaleX || type() == ScaleY || type() == ScaleZ || type() == Scale3D; }
 
 private:
     virtual OperationType type() const override { return m_type; }
@@ -63,15 +66,13 @@ private:
         return m_x == s->m_x && m_y == s->m_y && m_z == s->m_z;
     }
 
-    virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override;
-
     ScaleTransformOperation(double sx, double sy, double sz, OperationType type)
         : m_x(sx)
         , m_y(sy)
         , m_z(sz)
         , m_type(type)
     {
-        ASSERT(type == ScaleX || type == ScaleY || type == ScaleZ || type == Scale || type == Scale3D);
+        ASSERT(isMatchingOperationType());
     }
 
     double m_x;
@@ -80,6 +81,8 @@ private:
     OperationType m_type;
 };
 
+DEFINE_TRANSFORM_TYPE_CASTS(ScaleTransformOperation, isMatchingOperationType());
+
 } // namespace blink
 
 #endif // ScaleTransformOperation_h