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

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

Index: Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHost.cpp
===================================================================
--- Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHost.cpp	(revision 121110)
+++ Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHost.cpp	(working copy)
@@ -296,28 +296,7 @@
             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;
 }
@@ -420,9 +399,9 @@
             setContentsMemoryAllocationLimitBytes(0);
         else
             setContentsMemoryAllocationLimitBytes(m_contentsTextureManager->preferredMemoryLimitBytes());
-    } else {
-        setNeedsForcedCommit();
     }
+
+    setNeedsForcedCommit();
 }
 
 void CCLayerTreeHost::setContentsMemoryAllocationLimitBytes(size_t bytes)