Cleanup: Remove unneeded chrome/browser/prefs/pref_service.h usage....

chrome/browser/chromeos/dom_ui/language_options_handler.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/chromeos/dom_ui/language_options_handler.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
+#include <vector>
 
 #include "app/l10n_util.h"
 #include "base/basictypes.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/input_method_library.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/metrics/user_metrics.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/spellcheck_common.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 
 namespace chromeos {
 
@@ skipping 273 matching lines @@
 void LanguageOptionsHandler::SignOutCallback(const ListValue* args) {
   UserMetrics::RecordAction(UserMetricsAction("LanguageOptions_SignOut"));
 
   Browser* browser = Browser::GetBrowserForController(
       &dom_ui_->tab_contents()->controller(), NULL);
   if (browser)
     browser->ExecuteCommand(IDC_EXIT);
 }
 
 }  // namespace chromeos