Revert 105784 - Merge 104121 - Source/WebCore: Crash in RenderRegion::getRegionRangeForBox.

Source/WebCore/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 6600 matching lines @@
     LayoutSize offsetDelta = layoutState->m_layoutOffset - layoutState->m_pageOffset;
     return isHorizontalWritingMode() ? offsetDelta.height() : offsetDelta.width();
 }
 
 RenderRegion* RenderBlock::regionAtBlockOffset(LayoutUnit blockOffset) const
 {
     if (!inRenderFlowThread())
         return 0;
 
     RenderFlowThread* flowThread = enclosingRenderFlowThread();
-    if (!flowThread || !flowThread->hasValidRegionInfo())
+    if (!flowThread || !flowThread->hasValidRegions())
         return 0;
 
     return flowThread->renderRegionForLine(offsetFromLogicalTopOfFirstPage() + blockOffset, true);
 }
 
 void RenderBlock::setStaticInlinePositionForChild(RenderBox* child, LayoutUnit blockOffset, LayoutUnit inlinePosition)
 {
     if (inRenderFlowThread()) {
         // Shift the inline position to exclude the region offset.
         inlinePosition += startOffsetForContent() - startOffsetForContent(blockOffset);
     }
     child->layer()->setStaticInlinePosition(inlinePosition);
 }
 
 bool RenderBlock::logicalWidthChangedInRegions() const
 {
     if (!inRenderFlowThread())
         return false;
     
     RenderFlowThread* flowThread = enclosingRenderFlowThread();
-    if (!flowThread || !flowThread->hasValidRegionInfo())
+    if (!flowThread || !flowThread->hasValidRegions())
         return 0;
     
     return flowThread->logicalWidthChangedInRegions(this, offsetFromLogicalTopOfFirstPage());
 }
 
 RenderRegion* RenderBlock::clampToStartAndEndRegions(RenderRegion* region) const
 {
     ASSERT(region && inRenderFlowThread());
     
     // We need to clamp to the block, since we want any lines or blocks that overflow out of the
@@ skipping 393 matching lines @@
 }
 
 String ValueToString<RenderBlock::FloatingObject*>::string(const RenderBlock::FloatingObject* floatingObject)
 {
     return String::format("%p (%dx%d %dx%d)", floatingObject, floatingObject->x(), floatingObject->y(), floatingObject->maxX(), floatingObject->maxY());
 }
 
 #endif
 
 } // namespace WebCore