Extract PrefServiceBase into chrome/browser/api. Use in api and autofill.

chrome/browser/chromeos/input_method/browser_state_monitor.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
 
 #include <string>
 
 #include "chrome/browser/api/prefs/pref_member.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_types.h"
 
+class PrefService;
+
 namespace chromeos {
 namespace input_method {
 
 // A class which monitors a notification from the browser to keep track of the
 // browser state (not logged in, logged in, etc.) and notify the current state
 // to the input method manager. The class also updates the appropriate Chrome
 // prefs (~/Local\ State or ~/Preferences) depending on the current browser
 // state.
 class BrowserStateMonitor : public content::NotificationObserver,
                             public InputMethodManager::Observer {
@@ skipping 34 matching lines @@
   // For testing.
   PrefService* pref_service_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserStateMonitor);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_