Clear absolute clip rects when transform changes

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 1589 matching lines @@
         // FIXME: We could do better here by computing a temporary overflow object from layoutPositionedObjects and only
         // updating our overflow if we either used to have overflow or if the new temporary object has overflow.
         // For now just always recompute overflow. This is no worse performance-wise than the old code that called rightmostPosition and
         // lowestPosition on every relayout so it's not a regression.
         // computeOverflow expects the bottom edge before we clamp our height. Since this information isn't available during
         // simplifiedLayout, we cache the value in m_overflow.
         LayoutUnit oldClientAfterEdge = hasRenderOverflow() ? m_overflow->layoutClientAfterEdge() : clientLogicalBottom();
         computeOverflow(oldClientAfterEdge, true);
     }
 
-    updateLayerTransform();
+    updateLayerTransformAfterLayout();
 
     updateScrollInfoAfterLayout();
 
     clearNeedsLayout();
     return true;
 }
 
 void RenderBlock::markFixedPositionObjectForLayoutIfNeeded(RenderObject* child, SubtreeLayoutScope& layoutScope)
 {
     if (child->style()->position() != FixedPosition)
@@ skipping 3426 matching lines @@
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace WebCore