Fix unexpected blurry text caused by combination of skew and promotion

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 968cbba47fb332cc2fce3225cf6c2504ee9e6c83..0e28ff35c6091b152fefdc117bf30dde71b27800 100644
--- a/third_party/WebKit/Source/platform/transforms/TransformOperation.h
+++ b/third_party/WebKit/Source/platform/transforms/TransformOperation.h
@@ -99,6 +99,11 @@ class PLATFORM_EXPORT TransformOperation
            opType == Interpolated;
   }
 
+  bool isSkewOperation() const {
+    OperationType opType = type();
+    return opType == Skew || opType == SkewX || opType == SkewY;
+  }
+
   virtual bool dependsOnBoxSize() const { return false; }
 };