Merge 95668 - [chromium] SharedGraphicsContext3D's context should not be destroyed during atexit

Source/WebCore/platform/graphics/gpu/SharedGraphicsContext3D.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
@@ skipping 20 matching lines @@
 namespace WebCore {
 
 GraphicsContext3D* SharedGraphicsContext3D::create(HostWindow* window)
 {
     GraphicsContext3D::Attributes attributes;
     attributes.depth = false;
     attributes.stencil = true;
     attributes.antialias = false;
     attributes.canRecoverFromContextLoss = false; // Canvas contexts can not handle lost contexts.
     attributes.shareResources = true;
-    static RefPtr<GraphicsContext3D> context = GraphicsContext3D::create(attributes, window);
-    return context.get();
+    static GraphicsContext3D* context = GraphicsContext3D::create(attributes, window).leakRef();
+    return context;
 }
 
 }