Add PageBoundaryRule parameter to columnSetAtBlockOffset().

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

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 109 matching lines @@
     // rectangles are completely physical in terms of writing mode.
     LayoutRect fragmentsBoundingBox(const LayoutRect& layerBoundingBox) const;
 
     // Convert a logical position in the flow thread coordinate space to a logical position in the
     // containing coordinate space.
     void flowThreadToContainingCoordinateSpace(LayoutUnit& blockPosition, LayoutUnit& inlinePosition) const;
 
     virtual LayoutPoint flowThreadPointToVisualPoint(const LayoutPoint& flowThreadPoint) const = 0;
     virtual LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) const = 0;
 
-    virtual LayoutMultiColumnSet* columnSetAtBlockOffset(LayoutUnit) const = 0;
+    virtual LayoutMultiColumnSet* columnSetAtBlockOffset(LayoutUnit, PageBoundaryRule) const = 0;
 
     virtual const char* name() const = 0;
 
 protected:
     void generateColumnSetIntervalTree();
 
     LayoutMultiColumnSetList m_multiColumnSetList;
 
     typedef PODInterval<LayoutUnit, LayoutMultiColumnSet*> MultiColumnSetInterval;
     typedef PODIntervalTree<LayoutUnit, LayoutMultiColumnSet*> MultiColumnSetIntervalTree;
@@ skipping 28 matching lines @@
 // These structures are used by PODIntervalTree for debugging.
 #ifndef NDEBUG
 template <> struct ValueToString<LayoutMultiColumnSet*> {
     static String toString(const LayoutMultiColumnSet* value) { return String::format("%p", value); }
 };
 #endif
 
 } // namespace blink
 
 #endif // LayoutFlowThread_h