| Index: third_party/WebKit/Source/core/layout/LayoutFlowThread.h | 
| diff --git a/third_party/WebKit/Source/core/layout/LayoutFlowThread.h b/third_party/WebKit/Source/core/layout/LayoutFlowThread.h | 
| index eec35e950170d5111575f61a36aadbfdd68cf9c4..bac6c8b347fe5421e726eef2d87bd51a9a7f0aa4 100644 | 
| --- a/third_party/WebKit/Source/core/layout/LayoutFlowThread.h | 
| +++ b/third_party/WebKit/Source/core/layout/LayoutFlowThread.h | 
| @@ -82,7 +82,7 @@ public: | 
| void invalidateColumnSets(); | 
| bool hasValidColumnSetInfo() const { return !m_columnSetsInvalidated && !m_multiColumnSetList.isEmpty(); } | 
|  | 
| -    void mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect&, const PaintInvalidationState*) const override; | 
| +    bool mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect&, const PaintInvalidationState*, VisibleRectFlags = DefaultVisibleRectFlags) const override; | 
|  | 
| LayoutUnit pageLogicalHeightForOffset(LayoutUnit); | 
| LayoutUnit pageRemainingLogicalHeightForOffset(LayoutUnit, PageBoundaryRule); | 
|  |