Fix crash with pepper 3D on multiple windows in same renderer

content/renderer/ggl.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This API is consistent with other OpenGL setup APIs like window's WGL
 // and pepper's PGL. This API is used to manage OpenGL contexts in the Chrome
 // renderer process in a way that is consistent with other platforms. It is
 // a C style API to ease porting of existing OpenGL software to Chrome.
 
 #ifndef CONTENT_RENDERER_GGL_H_
 #define CONTENT_RENDERER_GGL_H_
 #pragma once
 
 #include "base/callback.h"
+#include "base/weak_ptr.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 
 class GpuChannelHost;
 class MessageLoop;
 class CommandBufferProxy;
 
 namespace gpu {
 namespace gles2 {
 class GLES2Implementation;
@@ skipping 110 matching lines @@
 
 // For a view context, display everything that has been rendered since the
 // last call. For an offscreen context, resolve everything that has been
 // rendered since the last call to a copy that can be accessed by the parent
 // context.
 bool SwapBuffers(Context* context);
 
 // Destroy the given GGL context.
 bool DestroyContext(Context* context);
 
+// Gets a weak reference to the context.
+base::WeakPtr<Context> GetWeakContextReference(Context* context);

[apatrick_chromium, 2011/03/17 20:15:38]

I regret making ggl c-style now :(

+
 // Create a hardware video decode engine corresponding to the context.
 media::VideoDecodeEngine* CreateVideoDecodeEngine(Context* context);
 
 // Create a hardware video decode context to pair with the hardware video
 // decode engine. It can also be used with a software decode engine.
 //
 // Set |hardware_decoder| to true if this context is for a hardware video
 // engine. |message_loop| is where the decode context should run on.
 media::VideoDecodeContext* CreateVideoDecodeContext(Context* context,
                                                     MessageLoop* message_loop,
@@ skipping 11 matching lines @@
 
 // Return true if GPU process reported context lost or there was a problem
 // communicating with the GPU process.
 bool IsCommandBufferContextLost(Context* context);
 
 CommandBufferProxy* GetCommandBufferProxy(Context* context);
 
 }  // namespace ggl
 
 #endif  // CONTENT_RENDERER_GGL_H_