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

chrome/browser/background/background_mode_manager_unittest.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 "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_unittest_util.h"
 
 class BackgroundModeManagerTest : public testing::Test {
  public:
   BackgroundModeManagerTest()
-      : profile_manager_(
-            static_cast<TestingBrowserProcess*>(g_browser_process)) {}
+      : profile_manager_(TestingBrowserProcess::GetGlobal()) {}
   ~BackgroundModeManagerTest() {}
   void SetUp() {
     command_line_.reset(new CommandLine(CommandLine::NO_PROGRAM));
     ASSERT_TRUE(profile_manager_.SetUp());
   }
   scoped_ptr<CommandLine> command_line_;
   TestingProfileManager profile_manager_;
 };
 
 class TestBackgroundModeManager : public BackgroundModeManager {
@@ skipping 270 matching lines @@
 
 TEST_F(BackgroundModeManagerTest,
        BackgroundModeDisabledPreventsKeepAliveOnStartup) {
   TestingProfile* profile1 = profile_manager_.CreateTestingProfile("p1");
   command_line_->AppendSwitch(switches::kKeepAliveForTest);
   TestBackgroundModeManager manager(
       command_line_.get(), profile_manager_.profile_info_cache(), false);
   manager.RegisterProfile(profile1);
   EXPECT_FALSE(manager.ShouldBeInBackgroundMode());
 }