Avoid collapsing anonymous block children already being destroyed

Source/core/rendering/RenderBlock.h

 /*
  * 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 Apple Inc. 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 589 matching lines @@
 
     virtual const char* renderName() const;
 
     virtual bool isRenderBlock() const OVERRIDE FINAL { return true; }
     virtual bool isBlockFlow() const OVERRIDE FINAL { return (!isInline() || isReplaced()) && !isTable(); }
     virtual bool isInlineBlockOrInlineTable() const OVERRIDE FINAL { return isInline() && isReplaced(); }
 
     void makeChildrenNonInline(RenderObject* insertionPoint = 0);
     virtual void removeLeftoverAnonymousBlock(RenderBlock* child);
 
-    static void collapseAnonymousBoxChild(RenderBlock* parent, RenderObject* child);
+    static void collapseAnonymousBlockChild(RenderBlock* parent, RenderBlock* child);
     void moveAllChildrenIncludingFloatsTo(RenderBlock* toBlock, bool fullRemoveInsert);
 
     virtual void dirtyLinesFromChangedChild(RenderObject* child) OVERRIDE FINAL { m_lineBoxes.dirtyLinesFromChangedChild(this, child); }
 
     void addChildToContinuation(RenderObject* newChild, RenderObject* beforeChild);
     void addChildIgnoringContinuation(RenderObject* newChild, RenderObject* beforeChild);
     void addChildToAnonymousColumnBlocks(RenderObject* newChild, RenderObject* beforeChild);
 
     void addChildIgnoringAnonymousColumnBlocks(RenderObject* newChild, RenderObject* beforeChild = 0);
 
@@ skipping 478 matching lines @@
     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderBlock());
     return static_cast<const RenderBlock*>(object);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toRenderBlock(const RenderBlock*);
 
 } // namespace WebCore
 
 #endif // RenderBlock_h