Merge 112568 - [chromium] Ensure framebuffer exists at the start of beginDrawingFrame.

Source/WebCore/platform/graphics/chromium/cc/CCSingleThreadProxy.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 54 matching lines @@
     TRACE_EVENT("CCSingleThreadProxy::~CCSingleThreadProxy", this, 0);
     ASSERT(CCProxy::isMainThread());
     ASSERT(!m_layerTreeHostImpl && !m_layerTreeHost); // make sure stop() got called.
 }
 
 bool CCSingleThreadProxy::compositeAndReadback(void *pixels, const IntRect& rect)
 {
     TRACE_EVENT("CCSingleThreadProxy::compositeAndReadback", this, 0);
     ASSERT(CCProxy::isMainThread());
 
-    ScopedEnsureFramebufferAllocation ensureFramebuffer(m_layerTreeHostImpl->layerRenderer());
-
     if (!commitIfNeeded())
         return false;
 
     if (!doComposite())
         return false;
 
     m_layerTreeHostImpl->readback(pixels, rect);
 
     if (m_layerTreeHostImpl->isContextLost())
         return false;
@@ skipping 234 matching lines @@
 
 void CCSingleThreadProxy::didSwapFrame()
 {
     if (m_nextFrameIsNewlyCommittedFrame) {
         m_nextFrameIsNewlyCommittedFrame = false;
         m_layerTreeHost->didCommitAndDrawFrame();
     }
 }
 
 }