Remove BrowserThread::UnsafeGetBrowserThread, add UnsafeGetMessageLoopForThread.

chrome/browser/chromeos/boot_times_loader.cc

 // Copyright (c) 2011 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 "chrome/browser/chromeos/boot_times_loader.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 103 matching lines @@
 BootTimesLoader::~BootTimesLoader() {}
 
 // static
 BootTimesLoader* BootTimesLoader::Get() {
   return g_boot_times_loader.Pointer();
 }
 
 BootTimesLoader::Handle BootTimesLoader::GetBootTimes(
     CancelableRequestConsumerBase* consumer,
     BootTimesLoader::GetBootTimesCallback* callback) {
-  if (!g_browser_process->file_thread()) {
+  if (!BrowserThread::IsMessageLoopValid(BrowserThread::FILE)) {
     // This should only happen if Chrome is shutting down, so we don't do
     // anything.
     return 0;
   }
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kTestType)) {
     // TODO(davemoore) This avoids boottimes for tests. This needs to be
     // replaced with a mock of BootTimesLoader.
     return 0;
@@ skipping 343 matching lines @@
           GetRenderWidgetHost(&tab_contents->controller());
       render_widget_hosts_loading_.erase(render_widget_host);
       break;
     }
     default:
       break;
   }
 }
 
 }  // namespace chromeos