Replace chromeos::UserManager::Get() with chromeos::GetUserManager().

chrome/browser/notifications/message_center_settings_controller_unittest.cc

 // Copyright 2013 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 <string>
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/notifications/message_center_settings_controller.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
@@ skipping 76 matching lines @@
     GetFakeUserManager()->UserLoggedIn(name, name + kUserIdHashSuffix, false);
   }
 
   void SwitchActiveUser(const std::string& name) {
     GetFakeUserManager()->SwitchActiveUser(name);
     controller()->ActiveUserChanged(GetFakeUserManager()->GetActiveUser());
   }
 
  private:
   chromeos::FakeUserManager* GetFakeUserManager() {
-    return static_cast<chromeos::FakeUserManager*>(
-        chromeos::UserManager::Get());
+    return static_cast<chromeos::FakeUserManager*>(chromeos::GetUserManager());
   }
 
   scoped_ptr<chromeos::ScopedUserManagerEnabler> user_manager_enabler_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterSettingsControllerChromeOSTest);
 };
 #endif  // OS_CHROMEOS
 
 #if !defined(OS_CHROMEOS)
 TEST_F(MessageCenterSettingsControllerTest, NotifierGroups) {
@@ skipping 45 matching lines @@
   SwitchActiveUser("Profile-1");
   EXPECT_EQ(controller()->GetNotifierGroupCount(), 1u);
   EXPECT_EQ(controller()->GetNotifierGroupAt(0).name,
             base::UTF8ToUTF16("Profile-1"));
   EXPECT_EQ(controller()->GetNotifierGroupAt(0).index, 0u);
 }
 #endif
 
 // TODO(mukai): write a test case to reproduce the actual guest session scenario
 // in ChromeOS -- no profiles in the profile_info_cache.