work-in-progress patch to fix context lost black video

content/renderer/media/android/stream_texture_factory_impl.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_ANDROID_STREAM_TEXTURE_FACTORY_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_ANDROID_STREAM_TEXTURE_FACTORY_IMPL_H_
 
 #include "content/renderer/media/android/stream_texture_factory.h"
 
 namespace cc {
@@ skipping 19 matching lines @@
 
   // StreamTextureFactory implementation.
   virtual StreamTextureProxy* CreateProxy() OVERRIDE;
   virtual void EstablishPeer(int32 stream_id, int player_id) OVERRIDE;
   virtual unsigned CreateStreamTexture(unsigned texture_target,
                                        unsigned* texture_id,
                                        gpu::Mailbox* texture_mailbox) OVERRIDE;
   virtual void SetStreamTextureSize(int32 texture_id,
                                     const gfx::Size& size) OVERRIDE;
   virtual gpu::gles2::GLES2Interface* ContextGL() OVERRIDE;
+  virtual void AddObserver(StreamTextureFactoryContextObserver* obs) OVERRIDE;
+  virtual void RemoveObserver(
+      StreamTextureFactoryContextObserver* obs) OVERRIDE;
 
  private:
   friend class base::RefCounted<StreamTextureFactoryImpl>;
   StreamTextureFactoryImpl(
       const scoped_refptr<cc::ContextProvider>& context_provider,
       GpuChannelHost* channel,
       int frame_id);
   virtual ~StreamTextureFactoryImpl();
 
   scoped_refptr<cc::ContextProvider> context_provider_;
   scoped_refptr<GpuChannelHost> channel_;
   int frame_id_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(StreamTextureFactoryImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_ANDROID_STREAM_TEXTURE_FACTORY_IMPL_H_