| Index: third_party/WebKit/Source/core/layout/LayoutFlowThread.h
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| diff --git a/third_party/WebKit/Source/core/layout/LayoutFlowThread.h b/third_party/WebKit/Source/core/layout/LayoutFlowThread.h
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| index 08d43045b00b1a0e2a24f8181cf58bd8c1c4f66b..e0bf6709615f970bf692e256b4f9f1ab73a87b82 100644
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| --- a/third_party/WebKit/Source/core/layout/LayoutFlowThread.h
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| +++ b/third_party/WebKit/Source/core/layout/LayoutFlowThread.h
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| @@ -105,11 +105,7 @@ public:
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|      // rectangles are completely physical in terms of writing mode.
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|      LayoutRect fragmentsBoundingBox(const LayoutRect& layerBoundingBox) const;
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|  
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| -    LayoutPoint flowThreadPointToVisualPoint(const LayoutPoint& flowThreadPoint) const
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| -    {
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| -        return flowThreadPoint + columnOffset(flowThreadPoint);
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| -    }
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| -
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| +    virtual LayoutPoint flowThreadPointToVisualPoint(const LayoutPoint& flowThreadPoint) const = 0;
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|      virtual LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) const = 0;
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|  
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|      virtual LayoutMultiColumnSet* columnSetAtBlockOffset(LayoutUnit) const = 0;
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| 
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