Update other unittests to use newly added TestingBrowserProcess::GetGlobal().

chrome/browser/signin/signin_names_io_thread_unittest.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 "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/signin/signin_names_io_thread.h"
 #include "chrome/common/chrome_notification_types.h"
@@ skipping 21 matching lines @@
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread io_thread_;
   TestingProfileManager testing_profile_manager_;
   SigninNamesOnIOThread signin_names_;
 };
 
 SigninNamesOnIOThreadTest::SigninNamesOnIOThreadTest()
     : ui_thread_(content::BrowserThread::UI, &message_loop_),
       io_thread_(content::BrowserThread::IO, &message_loop_),
       testing_profile_manager_(
-          static_cast<TestingBrowserProcess*>(g_browser_process)) {
+          TestingBrowserProcess::GetGlobal()) {
 }
 
 void SigninNamesOnIOThreadTest::SetUp() {
   ASSERT_TRUE(testing_profile_manager_.SetUp());
 }
 
 void SigninNamesOnIOThreadTest::TearDown() {
   signin_names_.ReleaseResourcesOnUIThread();
 }
 
@@ skipping 69 matching lines @@
 
   SigninNamesOnIOThread signin_names;
 
   const SigninNamesOnIOThread::EmailSet& emails = signin_names.GetEmails();
   ASSERT_EQ(2u, emails.size());
   ASSERT_EQ(1u, emails.count(email1));
   ASSERT_EQ(1u, emails.count(email2));
 
   signin_names.ReleaseResourcesOnUIThread();
 }