Remove an outdated comment.

ipc/ipc_channel_proxy.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 "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 75 matching lines @@
 // Called on the IPC::Channel thread
 bool ChannelProxy::Context::OnMessageReceived(const Message& message) {
   // First give a chance to the filters to process this message.
   if (!TryFilters(message))
     OnMessageReceivedNoFilter(message);
   return true;
 }
 
 // Called on the IPC::Channel thread
 bool ChannelProxy::Context::OnMessageReceivedNoFilter(const Message& message) {
-  // NOTE: This code relies on the listener's message loop not going away while
-  // this thread is active.  That should be a reasonable assumption, but it
-  // feels risky.  We may want to invent some more indirect way of referring to
-  // a MessageLoop if this becomes a problem.
   listener_task_runner_->PostTask(
       FROM_HERE, base::Bind(&Context::OnDispatchMessage, this, message));
   return true;
 }
 
 // Called on the IPC::Channel thread
 void ChannelProxy::Context::OnChannelConnected(int32 peer_pid) {
   // Add any pending filters.  This avoids a race condition where someone
   // creates a ChannelProxy, calls AddFilter, and then right after starts the
   // peer process.  The IO thread could receive a message before the task to add
@@ skipping 305 matching lines @@
   Channel* channel = context_.get()->channel_.get();
   // Channel must have been created first.
   DCHECK(channel) << context_.get()->channel_id_;
   return channel->GetPeerEuid(peer_euid);
 }
 #endif
 
 //-----------------------------------------------------------------------------
 
 }  // namespace IPC