Support exposing Mojo services between render frames, render threads, and their respective hosts.

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 524444369d74129ac546c7b7013d8a2b46291165..8cc349d7f3590667099e1bb4085b581c954a493e 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -165,6 +165,7 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
   virtual void PreCacheFont(const LOGFONT& log_font) OVERRIDE;
   virtual void ReleaseCachedFonts() OVERRIDE;
 #endif
+  virtual ServiceRegistry* GetServiceRegistry() OVERRIDE;
 
   // Synchronously establish a channel to the GPU plugin if not previously
   // established or if it has been lost (for example if the GPU plugin crashed).
@@ -419,13 +420,6 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
       unsigned internalformat,
       unsigned usage) OVERRIDE;
 
-  // mojo::ServiceProvider implementation:
-  virtual void ConnectToService(
-      const mojo::String& service_url,
-      const mojo::String& service_name,
-      mojo::ScopedMessagePipeHandle message_pipe,
-      const mojo::String& requestor_url) OVERRIDE;
-
   void Init();
 
   void OnSetZoomLevelForCurrentURL(const std::string& scheme,