Mojo: Move the paused message queue from ProxyMessagePipeEndpoint to ChannelEndpoint.

mojo/system/local_message_pipe_endpoint.h

 // Copyright 2013 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.
 
 #ifndef MOJO_SYSTEM_LOCAL_MESSAGE_PIPE_ENDPOINT_H_
 #define MOJO_SYSTEM_LOCAL_MESSAGE_PIPE_ENDPOINT_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "mojo/system/handle_signals_state.h"
@@ skipping 26 matching lines @@
                                  uint32_t* num_dispatchers,
                                  MojoReadMessageFlags flags) OVERRIDE;
   virtual HandleSignalsState GetHandleSignalsState() const OVERRIDE;
   virtual MojoResult AddWaiter(Waiter* waiter,
                                MojoHandleSignals signals,
                                uint32_t context,
                                HandleSignalsState* signals_state) OVERRIDE;
   virtual void RemoveWaiter(Waiter* waiter,
                             HandleSignalsState* signals_state) OVERRIDE;
 
-  // This is only to be used by |ProxyMessagePipeEndpoint|:
+  // This is only to be used by |MessagePipe|:
   MessageInTransitQueue* message_queue() { return &message_queue_; }
 
  private:
   bool is_open_;
   bool is_peer_open_;
 
   // Queue of incoming messages.
   MessageInTransitQueue message_queue_;
   WaiterList waiter_list_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalMessagePipeEndpoint);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_SYSTEM_LOCAL_MESSAGE_PIPE_ENDPOINT_H_