Remove calls to MessageLoop::current() in remoting.

remoting/host/setup/start_host_main.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/host/setup/start_host_main.h"
 
 #include <stddef.h>
 #include <stdio.h>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "remoting/base/logging.h"
 #include "remoting/base/url_request_context_getter.h"
 #include "remoting/host/service_urls.h"
 #include "remoting/host/setup/host_starter.h"
 #include "remoting/host/setup/oauth_helper.h"
@@ skipping 56 matching lines @@
     return std::string();
   size_t newline_index = str.find('\n');
   if (newline_index != std::string::npos)
     str[newline_index] = '\0';
   str.resize(strlen(&str[0]));
   return str;
 }
 
 // Called when the HostStarter has finished.
 void OnDone(HostStarter::Result result) {
-  if (base::MessageLoop::current() != g_message_loop) {
+  if (!g_message_loop->task_runner()->BelongsToCurrentThread()) {
     g_message_loop->PostTask(FROM_HERE, base::Bind(&OnDone, result));
     return;
   }
   switch (result) {
     case HostStarter::START_COMPLETE:
       g_started = true;
       break;
     case HostStarter::NETWORK_ERROR:
       fprintf(stderr, "Couldn't start host: network error.\n");
       break;
@@ skipping 131 matching lines @@
   // Destroy the HostStarter and URLRequestContextGetter before stopping the
   // IO thread.
   host_starter.reset();
   url_request_context_getter = nullptr;
 
   io_thread.Stop();
 
   return g_started ? 0 : 1;
 }
 
-}  // namespace remoting
+}  // namespace remoting