Implement animations for Independent CSS Transform Properties

Source/platform/transforms/TranslateTransformOperation.h

Index: Source/platform/transforms/TranslateTransformOperation.h
diff --git a/Source/platform/transforms/TranslateTransformOperation.h b/Source/platform/transforms/TranslateTransformOperation.h
index 6ceac11668eb03a4235145d6e221359d410b0bac..63687e9054b50604a61e5edb0ef011987a7f8b39 100644
--- a/Source/platform/transforms/TranslateTransformOperation.h
+++ b/Source/platform/transforms/TranslateTransformOperation.h
@@ -57,6 +57,8 @@ public:
         transform.translate3d(x(borderBoxSize), y(borderBoxSize), z());
     }
 
+    static bool isMatchingOperationType(OperationType type) { return type == Translate || type == TranslateX || type == TranslateY || type == TranslateZ || type == Translate3D; }
+
 private:
     virtual OperationType type() const override { return m_type; }
 
@@ -81,7 +83,7 @@ private:
         , m_z(tz)
         , m_type(type)
     {
-        ASSERT(type == TranslateX || type == TranslateY || type == TranslateZ || type == Translate || type == Translate3D);
+        ASSERT(isMatchingOperationType(type));
     }
 
     Length m_x;
@@ -90,6 +92,8 @@ private:
     OperationType m_type;
 };
 
+DEFINE_TRANSFORM_TYPE_CASTS(TranslateTransformOperation);
+
 } // namespace blink
 
 #endif // TranslateTransformOperation_h