[chromecast] Enable Mojo javascript bindings for cast_shell

chromecast/renderer/cast_content_renderer_client.h

Index: chromecast/renderer/cast_content_renderer_client.h
diff --git a/chromecast/renderer/cast_content_renderer_client.h b/chromecast/renderer/cast_content_renderer_client.h
index 801474fb4ac9778516afaea7fe6bb3749bdd3e0f..e32920dbdcd5b7a7b310c9422bdc8c407c36e31e 100644
--- a/chromecast/renderer/cast_content_renderer_client.h
+++ b/chromecast/renderer/cast_content_renderer_client.h
@@ -25,6 +25,7 @@ class MediaCapsObserverImpl;
 }
 
 namespace shell {
+class CastGinRunner;
 class CastRenderThreadObserver;
 
 class CastContentRendererClient : public content::ContentRendererClient {
@@ -51,16 +52,21 @@ class CastContentRendererClient : public content::ContentRendererClient {
   void DeferMediaLoad(content::RenderFrame* render_frame,
                       bool render_frame_has_played_media_before,
                       const base::Closure& closure) override;
+  void RunScriptsAtDocumentStart(content::RenderFrame* render_frame) override;
 
  protected:
   CastContentRendererClient();
 
+  void InjectJavaScript(content::RenderFrame* render_frame,
+                        const int resourceId);

[derekjchow1, 2016/09/14 21:20:13]

const pass by value does nothing.

[jarhar, 2016/09/15 00:32:42]

Done.

+
  private:
   std::unique_ptr<network_hints::PrescientNetworkingDispatcher>
       prescient_networking_dispatcher_;
   std::unique_ptr<CastRenderThreadObserver> cast_observer_;
   std::unique_ptr<media::MediaCapsObserverImpl> media_caps_observer_;
   const bool allow_hidden_media_playback_;
+  std::unique_ptr<CastGinRunner> cast_runner_;

[derekjchow1, 2016/09/14 21:20:13]

I don't think you need this variable. It gets reset everytime
RunScriptsAtDocumentState is called.

[jarhar, 2016/09/15 00:32:42]

Done.

 
   DISALLOW_COPY_AND_ASSIGN(CastContentRendererClient);
 };