Avoid false-positives of paint offset change detection

third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h

Index: third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
index c4386dc28f16417b15beb3c673e7f263c47a8098..200d64a1477c839881c790375bbe65e5904d9b5d 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
+++ b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.h
@@ -15,6 +15,7 @@
 namespace blink {
 
 class FrameView;
+class LayoutBoxModelObject;
 class LayoutObject;
 
 // The context for PaintPropertyTreeBuilder.
@@ -116,8 +117,10 @@ class PaintPropertyTreeBuilder {
                                    PaintPropertyTreeBuilderContext&);
 
  private:
+  ALWAYS_INLINE static void updatePaintOffset(const LayoutBoxModelObject&,

[pdr., 2017/02/14 05:18:41]

We need to update the comment above updateContextForBoxPosition

[Xianzhu, 2017/02/14 19:23:34]

Done.

+                                              PaintPropertyTreeBuilderContext&);
   ALWAYS_INLINE static void updatePaintOffsetTranslation(
-      const LayoutObject&,
+      const LayoutBoxModelObject&,
       PaintPropertyTreeBuilderContext&);
   ALWAYS_INLINE static void updateTransform(const LayoutObject&,
                                             PaintPropertyTreeBuilderContext&);