Invalidate objects when containing block changed

third_party/WebKit/Source/core/layout/LayoutObject.h

Index: third_party/WebKit/Source/core/layout/LayoutObject.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.h b/third_party/WebKit/Source/core/layout/LayoutObject.h
index c6697f74031bf3c15fb8e506454cf652bc2cda6f..313dce1f69032d3ea3975a7032affc3c46a10b89 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.h
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.h
@@ -770,6 +770,7 @@ public:
     // the layoutObject returned is an ancestor of |paintInvalidationContainer|.
     LayoutObject* container(const LayoutBoxModelObject* paintInvalidationContainer = nullptr, bool* paintInvalidationContainerSkipped = nullptr) const;
     LayoutObject* containerCrossingFrameBoundaries() const;
+    // Finds the container as if this object is a fixed position element.
     LayoutBlock* containerForFixedPosition(const LayoutBoxModelObject* paintInvalidationContainer = nullptr, bool* paintInvalidationContainerSkipped = nullptr) const;
     LayoutBlock* containingBlockForAbsolutePosition() const;

[chrishtr, 2015/10/30 20:45:51]

Add the same type of comment here as for fixed position.

[Xianzhu, 2015/10/30 20:52:15]

Done.

 
@@ -1504,7 +1505,7 @@ private:
 
     inline void invalidateContainerPreferredLogicalWidths();
 
-    void invalidatePaintOfPreviousPaintInvalidationRect(const LayoutBoxModelObject& paintInvalidationContainer, PaintInvalidationReason) const;
+    void invalidatePaintOfPreviousPaintInvalidationRect(const LayoutBoxModelObject& paintInvalidationContainer, PaintInvalidationReason);
 
     LayoutRect previousSelectionRectForPaintInvalidation() const;
     void setPreviousSelectionRectForPaintInvalidation(const LayoutRect&);