Replace Chrome IPC with Mojo IPC for querying BatteryStatus service

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 92d1e4d1b78802735102f58033d32dd093bc8679..4e627ead4e4a314135f483ec1366fe5da2a755ce 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -256,9 +256,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // immediately after receiving response headers.
   void ResumeResponseDeferredAtStart(const GlobalRequestID& request_id);
 
-  // Activates Mojo for this process. Does nothing if Mojo is already activated.
-  void EnsureMojoActivated();
-
  protected:
   // A proxy for our IPC::Channel that lives on the IO thread (see
   // browser_process.h)
@@ -287,7 +284,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
  private:
   friend class VisitRelayingRenderProcessHost;
 
-  void MaybeActivateMojo();
   bool ShouldUseMojoChannel() const;
   scoped_ptr<IPC::ChannelProxy> CreateChannelProxy(
       const std::string& channel_id);
@@ -295,6 +291,9 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // Creates and adds the IO thread message filters.
   void CreateMessageFilters();
 
+  // Registers Mojo services to be exposed to the renderer.
+  void RegisterMojoServices();
+
   // Control message handlers.
   void OnShutdownRequest();
   void OnDumpHandlesDone();
@@ -335,7 +334,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
 #endif
 
   scoped_ptr<MojoApplicationHost> mojo_application_host_;
-  bool mojo_activation_required_;
 
   // The registered IPC listener objects. When this list is empty, we should
   // delete ourselves.