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

content/renderer/media/android/stream_texture_factory_synchronous_impl.h

Index: content/renderer/media/android/stream_texture_factory_synchronous_impl.h
diff --git a/content/renderer/media/android/stream_texture_factory_synchronous_impl.h b/content/renderer/media/android/stream_texture_factory_synchronous_impl.h
index 3466c564c9b524844db26b8b819d0684c6704721..460fce7ff551fb4991c1c5926f3ab7d7e956ccd1 100644
--- a/content/renderer/media/android/stream_texture_factory_synchronous_impl.h
+++ b/content/renderer/media/android/stream_texture_factory_synchronous_impl.h
@@ -7,6 +7,7 @@
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
+#include "base/observer_list.h"
 #include "content/renderer/media/android/stream_texture_factory.h"
 
 namespace gfx {
@@ -31,6 +32,9 @@ class StreamTextureFactorySynchronousImpl : public StreamTextureFactory {
 
     virtual gpu::gles2::GLES2Interface* ContextGL() = 0;
 
+    virtual void AddObserver(StreamTextureFactoryContextObserver* obs) = 0;
+    virtual void RemoveObserver(StreamTextureFactoryContextObserver* obs) = 0;
+
    protected:
     friend class base::RefCountedThreadSafe<ContextProvider>;
     virtual ~ContextProvider() {}
@@ -51,6 +55,9 @@ class StreamTextureFactorySynchronousImpl : public StreamTextureFactory {
   virtual void SetStreamTextureSize(int32 stream_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<StreamTextureFactorySynchronousImpl>;
@@ -62,6 +69,7 @@ class StreamTextureFactorySynchronousImpl : public StreamTextureFactory {
   CreateContextProviderCallback create_context_provider_callback_;
   scoped_refptr<ContextProvider> context_provider_;
   int frame_id_;
+  StreamTextureFactoryContextObserver* observer_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(StreamTextureFactorySynchronousImpl);
 };