Drop more dependencies of ProfileKeyedService infrastructure on chrome.

chrome/browser/chromeos/app_mode/kiosk_app_update_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_UPDATE_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_UPDATE_SERVICE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/singleton.h"
 #include "base/timer.h"
 #include "chrome/browser/extensions/update_observer.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/profiles/profile_keyed_service_factory.h"
 
+class Profile;
+
 namespace chromeos {
 
 // This class enforces automatic restart on app and Chrome updates in app mode.
 class KioskAppUpdateService : public ProfileKeyedService,
                               public extensions::UpdateObserver {
  public:
   explicit KioskAppUpdateService(Profile* profile);
   virtual ~KioskAppUpdateService();
 
   void set_app_id(const std::string& app_id) { app_id_ = app_id; }
@@ skipping 38 matching lines @@
   virtual ~KioskAppUpdateServiceFactory();
 
   // ProfileKeyedServiceFactory overrides:
   virtual ProfileKeyedService* BuildServiceInstanceFor(
       content::BrowserContext* profile) const OVERRIDE;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_UPDATE_SERVICE_H_