Remove BrowserThread::UnsafeGetBrowserThread, add UnsafeGetMessageLoopForThread.

chrome/browser/ui/webui/options/advanced_options_utils_win.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/ui/webui/options/advanced_options_utils.h"
 
 #include <windows.h>
 #include <cryptuiapi.h>
 #pragma comment(lib, "cryptui.lib")
 #include <shellapi.h>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/browser_process.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
 
 // Callback that opens the Internet Options control panel dialog with the
 // Connections tab selected.
 void OpenConnectionDialogCallback() {
   // Using rundll32 seems better than LaunchConnectionDialog which causes a
   // new dialog to be made for each call.  rundll32 uses the same global
   // dialog and it seems to share with the shortcut in control panel.
   FilePath rundll32;
   PathService::Get(base::DIR_SYSTEM, &rundll32);
   rundll32 = rundll32.AppendASCII("rundll32.exe");
 
   FilePath shell32dll;
   PathService::Get(base::DIR_SYSTEM, &shell32dll);
   shell32dll = shell32dll.AppendASCII("shell32.dll");
 
   FilePath inetcpl;
   PathService::Get(base::DIR_SYSTEM, &inetcpl);
   inetcpl = inetcpl.AppendASCII("inetcpl.cpl,,4");
 
   std::wstring args(shell32dll.value());
   args.append(L",Control_RunDLL ");
   args.append(inetcpl.value());
 
   ShellExecute(NULL, L"open", rundll32.value().c_str(), args.c_str(), NULL,
                SW_SHOWNORMAL);
 }
 
 void AdvancedOptionsUtilities::ShowNetworkProxySettings(
       TabContents* tab_contents) {
-  base::Thread* thread = g_browser_process->file_thread();
-  DCHECK(thread);
-  thread->message_loop()->PostTask(FROM_HERE,
-                                   base::Bind(&OpenConnectionDialogCallback));
+  DCHECK(BrowserThread::IsMessageLoopValid(BrowserThread::FILE));
+  BrowserThread::PostTask(BrowserThread::FILE,
+                          FROM_HERE,
+                          base::Bind(&OpenConnectionDialogCallback));
 }
 
 void AdvancedOptionsUtilities::ShowManageSSLCertificates(
       TabContents* tab_contents) {
   CRYPTUI_CERT_MGR_STRUCT cert_mgr = { 0 };
   cert_mgr.dwSize = sizeof(CRYPTUI_CERT_MGR_STRUCT);
   cert_mgr.hwndParent =
 #if defined(USE_AURA)
       NULL;
 #else
       tab_contents->view()->GetTopLevelNativeWindow();
 #endif
   ::CryptUIDlgCertMgr(&cert_mgr);
 }