Remove clips where we can show that they are unnecessary.

Source/core/rendering/RenderTable.cpp

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 619 matching lines @@
 
     if (!isRoot()) {
         LayoutRect overflowBox = visualOverflowRect();
         flipForWritingMode(overflowBox);
         overflowBox.inflate(maximalOutlineSize(paintInfo.phase));
         overflowBox.moveBy(adjustedPaintOffset);
         if (!overflowBox.intersects(paintInfo.rect))
             return;
     }
 
-    bool pushedClip = pushContentsClip(paintInfo, adjustedPaintOffset);
+    bool pushedClip = pushContentsClip(paintInfo, adjustedPaintOffset, ForceContentsClip);
     paintObject(paintInfo, adjustedPaintOffset);
     if (pushedClip)
         popContentsClip(paintInfo, paintPhase, adjustedPaintOffset);
 }
 
 void RenderTable::paintObject(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     PaintPhase paintPhase = paintInfo.phase;
     if ((paintPhase == PaintPhaseBlockBackground || paintPhase == PaintPhaseChildBlockBackground) && hasBoxDecorations() && style()->visibility() == VISIBLE)
         paintBoxDecorations(paintInfo, paintOffset);
@@ skipping 788 matching lines @@
 const BorderValue& RenderTable::tableEndBorderAdjoiningCell(const RenderTableCell* cell) const
 {
     ASSERT(cell->isFirstOrLastCellInRow());
     if (hasSameDirectionAs(cell->row()))
         return style()->borderEnd();
 
     return style()->borderStart();
 }
 
 }