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..7e0702ca7c8dd31cc8d6921127f99a0b714736ce 100644
--- a/Source/platform/transforms/ScaleTransformOperation.h
+++ b/Source/platform/transforms/ScaleTransformOperation.h
@@ -51,6 +51,7 @@ public:
     {
         transform.scale3d(m_x, m_y, m_z);
     }
+    virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override;
 
 private:
     virtual OperationType type() const override { return m_type; }
@@ -63,8 +64,6 @@ 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)
@@ -80,6 +79,8 @@ private:
     OperationType m_type;
 };
 
+DEFINE_TRANSFORM_TYPE_CASTS(ScaleTransformOperation, isScale());
+
 } // namespace blink
 
 #endif // ScaleTransformOperation_h