Remove PaintPhaseClippingMask.

sky/engine/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 698 matching lines @@
     if (paintPhase == PaintPhaseBlockBackground || paintPhase == PaintPhaseChildBlockBackground) {
         if (hasBoxDecorationBackground())
             paintBoxDecorationBackground(paintInfo, paintOffset);
     }
 
     if (paintPhase == PaintPhaseMask) {
         paintMask(paintInfo, paintOffset);
         return;
     }
 
-    if (paintPhase == PaintPhaseClippingMask) {
-        paintClippingMask(paintInfo, paintOffset);
-        return;
-    }
-
     // We're done.  We don't bother painting any children.
     if (paintPhase == PaintPhaseBlockBackground)
         return;
 
     if (paintPhase != PaintPhaseSelfOutline) {
         // Avoid painting descendants of the root element when stylesheets haven't loaded.  This eliminates FOUC.
         // It's ok not to draw, because later on, when all the stylesheets do load, styleResolverChanged() on the Document
         // will do a full paint invalidation.
         if (!document().didLayoutWithPendingStylesheets() || isRenderView())
             paintContents(paintInfo, scrolledOffset);
@@ skipping 1315 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 blink