[CSS Regions] Rename region-overflow to region-fragment

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 7221 matching lines @@
     RenderFlowThread* flowThread = flowThreadContainingBlock();
     if (!flowThread)
         return true; // Printing and multi-column both make new pages to accommodate content.
 
     // See if we're in the last region.
     LayoutUnit pageOffset = offsetFromLogicalTopOfFirstPage() + logicalOffset;
     RenderRegion* region = flowThread->regionAtBlockOffset(pageOffset, this);
     if (!region)
         return false;
     if (region->isLastRegion())
-        return region->isRenderRegionSet() || region->style()->regionOverflow() == BreakRegionOverflow
+        return region->isRenderRegionSet() || region->style()->regionFragment() == BreakRegionFragment
             || (pageBoundaryRule == IncludePageBoundary && pageOffset == region->logicalTopForFlowThreadContent());
     return true;
 }
 
 LayoutUnit RenderBlock::nextPageLogicalTop(LayoutUnit logicalOffset, PageBoundaryRule pageBoundaryRule) const
 {
     LayoutUnit pageLogicalHeight = pageLogicalHeightForOffset(logicalOffset);
     if (!pageLogicalHeight)
         return logicalOffset;
     
@@ skipping 848 matching lines @@
 {
     memoryInstrumentation->addRootObject(gColumnInfoMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPositionedDescendantsMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPercentHeightDescendantsMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPositionedContainerMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gPercentHeightContainerMap, WebCoreMemoryTypes::RenderingStructures);
     memoryInstrumentation->addRootObject(gDelayedUpdateScrollInfoSet, WebCoreMemoryTypes::RenderingStructures);
 }
 
 } // namespace WebCore