Convert IPC::ChannelMojo initialization to use new mojo::embedder::CreateChannelOnIOThread().

ipc/mojo/ipc_channel_mojo.h

Index: ipc/mojo/ipc_channel_mojo.h
diff --git a/ipc/mojo/ipc_channel_mojo.h b/ipc/mojo/ipc_channel_mojo.h
index b00abc954489b62cd01a7970b65344e552a49cd7..a2fa5879885240496b0f8761fef2263dbe124b2b 100644
--- a/ipc/mojo/ipc_channel_mojo.h
+++ b/ipc/mojo/ipc_channel_mojo.h
@@ -106,10 +106,7 @@ class IPC_MOJO_EXPORT ChannelMojo : public Channel {
   ChannelMojo(scoped_ptr<Channel> bootstrap, Mode mode, Listener* listener,
               scoped_refptr<base::TaskRunner> io_thread_task_runner);
 
-  void InitOnIOThread(mojo::ScopedMessagePipeHandle control_pipe);
-  scoped_ptr<ControlReader> CreateControlReader(
-      mojo::ScopedMessagePipeHandle pipe);
-  void DidCreateChannel(mojo::embedder::ChannelInfo*);
+  void InitOnIOThread();
 
   base::WeakPtrFactory<ChannelMojo> weak_factory_;
   scoped_ptr<Channel> bootstrap_;