Add MessagePipe interface. Use it in ChannelDispatcherBase.

remoting/protocol/host_event_dispatcher.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/protocol/host_event_dispatcher.h"
 
 #include "net/socket/stream_socket.h"
+#include "remoting/base/compound_buffer.h"
 #include "remoting/base/constants.h"
 #include "remoting/proto/event.pb.h"
 #include "remoting/proto/internal.pb.h"
 #include "remoting/protocol/input_stub.h"
 #include "remoting/protocol/message_serialization.h"
 
 namespace remoting {
 namespace protocol {
 
 HostEventDispatcher::HostEventDispatcher()
@@ skipping 28 matching lines @@
     input_stub_->InjectMouseEvent(message->mouse_event());
   } else if (message->has_touch_event()) {
     input_stub_->InjectTouchEvent(message->touch_event());
   } else {
     LOG(WARNING) << "Unknown event message received.";
   }
 }
 
 }  // namespace protocol
 }  // namespace remoting