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

Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHost.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 278 matching lines @@
     if (!m_layerRendererInitialized) {
         initializeLayerRenderer();
         if (!m_layerRendererInitialized)
             return false;
     }
     if (m_contextLost) {
         if (recreateContext() != RecreateSucceeded)
             return false;
     }
     m_triggerIdlePaints = false;
-
-    // If the texture manager's limit is set to zero (e.g. invisible tab)
-    // we won't be able to paint. We temporarily set it to a non-zero value
-    // and bring it back down to zero after we composite and read-back.
-    bool needsAllocationReset = false;
-    bool savedMemoryAllocationsIsForDisplay = false;
-    if (!m_memoryAllocationBytes) {
-        needsAllocationReset = true;
-        savedMemoryAllocationsIsForDisplay = m_memoryAllocationIsForDisplay;
-
-        m_memoryAllocationBytes = TextureManager::highLimitBytes(viewportSize());
-        m_memoryAllocationIsForDisplay = m_visible;
-     }
-
     bool ret = m_proxy->compositeAndReadback(pixels, rect);
-
-    // Set texture manager's limit back to zero.
-    if (needsAllocationReset) {
-        setContentsMemoryAllocationLimitBytes(0);
-        m_memoryAllocationIsForDisplay = savedMemoryAllocationsIsForDisplay;
-    }
-
     m_triggerIdlePaints = true;
     return ret;
 }
 
 void CCLayerTreeHost::finishAllRendering()
 {
     if (!m_layerRendererInitialized)
         return;
     m_proxy->finishAllRendering();
 }
@@ skipping 82 matching lines @@
         return;
 
     m_visible = visible;
 
     // FIXME: Remove this stuff, it is here just for the m20 merge.
     if (!m_visible && m_layerRendererInitialized) {
         if (m_proxy->layerRendererCapabilities().contextHasCachedFrontBuffer)
             setContentsMemoryAllocationLimitBytes(0);
         else
             setContentsMemoryAllocationLimitBytes(m_contentsTextureManager->preferredMemoryLimitBytes());
-    } else {
-        setNeedsForcedCommit();
     }
+
+    setNeedsForcedCommit();
 }
 
 void CCLayerTreeHost::setContentsMemoryAllocationLimitBytes(size_t bytes)
 {
     ASSERT(CCProxy::isMainThread());
     if (m_memoryAllocationBytes == bytes)
         return;
 
     m_memoryAllocationBytes = bytes;
     m_memoryAllocationIsForDisplay = bytes;
@@ skipping 290 matching lines @@
             else
                 layer->notifyAnimationFinished(wallClockTime);
         }
     }
 
     for (size_t childIndex = 0; childIndex < layer->children().size(); ++childIndex)
         setAnimationEventsRecursive(events, layer->children()[childIndex].get(), wallClockTime);
 }
 
 } // namespace WebCore