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

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

Index: Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp
===================================================================
--- Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp	(revision 121110)
+++ Source/WebCore/platform/graphics/chromium/cc/CCLayerTreeHostImpl.cpp	(working copy)
@@ -146,11 +146,6 @@
     // 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()