[Chromecast] Raises CastService creation to CastContentBrowserClient.

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 bdabd2564e20740003cd7dff8729b4b915e33acc..e8c840fb57928e70744c63eb4ac30651698e13a4 100644
--- a/chromecast/renderer/cast_content_renderer_client.h
+++ b/chromecast/renderer/cast_content_renderer_client.h
@@ -33,11 +33,6 @@ class CastContentRendererClient : public content::ContentRendererClient {
   // Adds any platform-specific bindings to the current frame.
   virtual void AddRendererNativeBindings(blink::WebLocalFrame* frame);
 
-  // Returns any MessageFilters from the platform implementation that should
-  // be added to the render process.
-  virtual std::vector<scoped_refptr<IPC::MessageFilter>>
-  GetRendererMessageFilters();
-
   // ContentRendererClient implementation:
   void RenderThreadStarted() override;
   void RenderViewCreated(content::RenderView* render_view) override;