Merge 78921

Source/WebCore/html/canvas/WebKitLoseContext.h

 /*
  * Copyright (C) 2010 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 24 matching lines @@
 class WebGLRenderingContext;
 
 class WebKitLoseContext : public WebGLExtension {
 public:
     static PassRefPtr<WebKitLoseContext> create(WebGLRenderingContext*);
 
     virtual ~WebKitLoseContext();
     virtual ExtensionName getName() const;
 
     void loseContext();
+    void contextDestroyed() { m_context = 0; }
 
 private:
     WebKitLoseContext(WebGLRenderingContext*);
 
     WebGLRenderingContext* m_context;
 };
 
 } // namespace WebCore
 
 #endif // WebKitLoseContext_h