Remove all remaining traces of MessageLoopProxy.

components/nacl/loader/nacl_listener.cc

 // 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.
 
 #include "base/run_loop.h"
 #include "components/nacl/loader/nacl_listener.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stdlib.h>
@@ skipping 83 matching lines @@
 }
 
 void DebugStubPortSelectedHandler(uint16_t port) {
   g_listener->Send(new NaClProcessHostMsg_DebugStubPortSelected(port));
 }
 
 #endif
 
 // Creates the PPAPI IPC channel between the NaCl IRT and the host
 // (browser/renderer) process, and starts to listen it on the thread where
-// the given message_loop_proxy runs.
+// the given task runner runs.
 // Also, creates and sets the corresponding NaClDesc to the given nap with
 // the FD #.
 void SetUpIPCAdapter(
     IPC::ChannelHandle* handle,
     scoped_refptr<base::SingleThreadTaskRunner> task_runner,
     struct NaClApp* nap,
     int nacl_fd,
     NaClIPCAdapter::ResolveFileTokenCallback resolve_file_token_cb,
     NaClIPCAdapter::OpenResourceCallback open_resource_cb) {
   scoped_refptr<NaClIPCAdapter> ipc_adapter(new NaClIPCAdapter(
@@ skipping 335 matching lines @@
 }
 
 void NaClListener::OnFileTokenResolved(
     uint64_t token_lo,
     uint64_t token_hi,
     IPC::PlatformFileForTransit ipc_fd,
     base::FilePath file_path) {
   resolved_cb_.Run(ipc_fd, file_path);
   resolved_cb_.Reset();
 }