Cleanup: Remove unneeded chrome/common/pref_names.h includes.

chrome/browser/signin/fake_signin_manager.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 "chrome/browser/signin/fake_signin_manager.h"
 
 #include "base/callback_helpers.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/global_error/global_error_service.h"
 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
-#include "chrome/common/pref_names.h"
 
 FakeSigninManagerBase::FakeSigninManagerBase(Profile* profile)
     : SigninManagerBase(
           ChromeSigninClientFactory::GetInstance()->GetForProfile(profile)) {}
 
 FakeSigninManagerBase::~FakeSigninManagerBase() {
 }
 
 // static
 KeyedService* FakeSigninManagerBase::Build(content::BrowserContext* context) {
@@ skipping 61 matching lines @@
   set_password(std::string());
   const std::string account_id = GetAuthenticatedAccountId();
   const std::string username = authenticated_username_;
   authenticated_username_.clear();
 
   FOR_EACH_OBSERVER(SigninManagerBase::Observer, observer_list_,
                     GoogleSignedOut(account_id, username));
 }
 
 #endif  // !defined (OS_CHROMEOS)