Use ContextProvider subclass to provide WGC3D pointers

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 7b113c9bd3ee42c4e570aa33e0ca155f40bf62a2..c942742498fff3643dbf37d943c8cc71f44c942d 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -6090,7 +6090,7 @@ WebMediaPlayer* RenderViewImpl::CreateAndroidWebMediaPlayer(
         SynchronousCompositorFactory::GetInstance();
     stream_texture_factory = factory->CreateStreamTextureFactory(routing_id_);
   } else {
-    scoped_refptr<cc::ContextProvider> context_provider =
+    scoped_refptr<webkit::gpu::ContextProviderWebContext> context_provider =
         RenderThreadImpl::current()->SharedMainThreadContextProvider();
 
     if (!context_provider.get()) {
@@ -6099,7 +6099,7 @@ WebMediaPlayer* RenderViewImpl::CreateAndroidWebMediaPlayer(
     }
 
     stream_texture_factory.reset(new StreamTextureFactoryImpl(
-        context_provider->Context3d(), gpu_channel_host, routing_id_));
+        context_provider->WebContext3D(), gpu_channel_host, routing_id_));
   }
 
   scoped_ptr<WebMediaPlayerAndroid> web_media_player_android(