Remove BrowserThread::UnsafeGetBrowserThread, add UnsafeGetMessageLoopForThread.

chrome/browser/chromeos/version_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/version_loader.h"
 
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 30 matching lines @@
 // static
 const char VersionLoader::kVersionPrefix[] = "CHROMEOS_RELEASE_VERSION=";
 
 // Beginning of line we look for that gives the firmware version.
 const char VersionLoader::kFirmwarePrefix[] = "version";
 
 VersionLoader::Handle VersionLoader::GetVersion(
     CancelableRequestConsumerBase* consumer,
     const VersionLoader::GetVersionCallback& callback,
     VersionFormat format) {
-  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;
   }
 
   scoped_refptr<GetVersionRequest> request(new GetVersionRequest(callback));
   AddRequest(request, consumer);
 
-  g_browser_process->file_thread()->message_loop()->PostTask(
+  BrowserThread::PostTask(
+      BrowserThread::FILE,
       FROM_HERE,
       NewRunnableMethod(backend_.get(), &Backend::GetVersion, request, format));
   return request->handle();
 }
 
 VersionLoader::Handle VersionLoader::GetFirmware(
     CancelableRequestConsumerBase* consumer,
     const VersionLoader::GetFirmwareCallback& 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;
   }
 
   scoped_refptr<GetFirmwareRequest> request(new GetFirmwareRequest(callback));
   AddRequest(request, consumer);
 
-  g_browser_process->file_thread()->message_loop()->PostTask(
+  BrowserThread::PostTask(
+      BrowserThread::FILE,
       FROM_HERE,
       NewRunnableMethod(backend_.get(), &Backend::GetFirmware, request));
   return request->handle();
 }
 
 // static
 std::string VersionLoader::ParseVersion(const std::string& contents,
                                         const std::string& prefix) {
   // The file contains lines such as:
   // XXX=YYY
@@ skipping 80 matching lines @@
   std::string contents;
   const FilePath file_path(kPathFirmware);
   if (file_util::ReadFileToString(file_path, &contents)) {
     firmware = ParseFirmware(contents);
   }
 
   request->ForwardResult(request->handle(), firmware);
 }
 
 }  // namespace chromeos