Add key based scrolling on magnified screen for kiosk mode.

chrome/browser/chromeos/login/user_manager_impl.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_LOGIN_USER_MANAGER_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 152 matching lines @@
   virtual void OnPolicyUpdated(const std::string& user_id) OVERRIDE;
   virtual void OnDeviceLocalAccountsChanged() OVERRIDE;
 
   virtual bool RespectLocalePreference(
       Profile* profile,
       const User* user,
       scoped_ptr<locale_util::SwitchLanguageCallback> callback) const OVERRIDE;
 
   void StopPolicyObserverForTesting();
 
+  static UserManager* CreateForTest() {
+    return new UserManagerImpl();
+  }
+
  private:
   friend class extensions::ExternalComponentLoaderTest;
   friend class SupervisedUserManagerImpl;
   friend class UserManager;
   friend class WallpaperManager;
   friend class UserManagerTest;
   friend class WallpaperManagerTest;
 
   typedef base::hash_map<std::string,
       linked_ptr<UserImageManager> > UserImageManagerMap;
@@ skipping 295 matching lines @@
 
   // Observer for the policy that can be used to manage user images.
   scoped_ptr<policy::CloudExternalDataPolicyObserver> policy_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(UserManagerImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_IMPL_H_