Revert 121000 - [chromium] LayerRendererChromium is not getting visibility messages in single threa…

Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHostImpl.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 128 matching lines @@
 
 void CCLayerTreeHostImpl::beginCommit()
 {
 }
 
 void CCLayerTreeHostImpl::commitComplete()
 {
     // Recompute max scroll position; must be after layer content bounds are
     // updated.
     updateMaxScrollPosition();
-
-    // Ensure all GL calls (including texture deletions) will actually be
-    // submitted for execution in the case we didn't call swap buffers.
-    if ((!m_visible || !canDraw()) && context())
-        context()->flush();
 }
 
 bool CCLayerTreeHostImpl::canDraw()
 {
     if (!m_rootLayerImpl)
         return false;
     if (viewportSize().isEmpty())
         return false;
     if (!m_layerRenderer)
         return false;
@@ skipping 748 matching lines @@
         return;
 
     bool isContinuing = m_activeGestureAnimation->animate(monotonicTime);
     if (isContinuing)
         m_client->setNeedsRedrawOnImplThread();
     else
         m_activeGestureAnimation.clear();
 }
 
 } // namespace WebCore