Don't use post multiplication on transforms with compatible pairs of operations

third_party/WebKit/Source/platform/transforms/TransformOperation.h

Index: third_party/WebKit/Source/platform/transforms/TransformOperation.h
diff --git a/third_party/WebKit/Source/platform/transforms/TransformOperation.h b/third_party/WebKit/Source/platform/transforms/TransformOperation.h
index 1453ae4dab8efa6b7f766872a6277d19ae6ffb10..004226e46c1b5ac40a99524e3be83c63a5fcc3de 100644
--- a/third_party/WebKit/Source/platform/transforms/TransformOperation.h
+++ b/third_party/WebKit/Source/platform/transforms/TransformOperation.h
@@ -83,6 +83,10 @@ class PLATFORM_EXPORT TransformOperation
   virtual PassRefPtr<TransformOperation> zoom(double factor) = 0;
 
   virtual OperationType type() const = 0;
+
+  // https://drafts.csswg.org/css-transforms/#transform-primitives
+  virtual OperationType primitiveType() const { return type(); }
+
   bool isSameType(const TransformOperation& other) const {
     return other.type() == type();
   }