[Smart Lock] Extract the screenlock state to the proximity_auth component.

chrome/browser/chromeos/login/easy_unlock/bootstrap_user_context_initializer.h

 // Copyright 2014 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_EASY_UNLOCK_BOOTSTRAP_USER_CONTEXT_INITIALIZER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_EASY_UNLOCK_BOOTSTRAP_USER_CONTEXT_INITIALIZER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 53 matching lines @@
   void OnGetTokensResponse(const std::string& refresh_token,
                            const std::string& access_token,
                            int expires_in_seconds) override;
   void OnRefreshTokenResponse(const std::string& access_token,
                               int expires_in_seconds) override;
   void OnGetUserInfoResponse(
       scoped_ptr<base::DictionaryValue> user_info) override;
   void OnOAuthError() override;
   void OnNetworkError(int response_code) override;
 
-  // EasyUnlockServiceObserver
-  void OnScreenlockStateChanged(
-      EasyUnlockScreenlockStateHandler::State state) override;
+  // EasyUnlockServiceObserver:
+  void OnScreenlockStateChanged(proximity_auth::ScreenlockState state) override;
 
   CompleteCallback callback_;
   scoped_ptr<gaia::GaiaOAuthClient> token_fetcher_;
 
   UserContext user_context_;
   bool random_key_used_;
 
   base::WeakPtrFactory<BootstrapUserContextInitializer> weak_ptr_factory_;
 
   static CompleteCallback* complete_callback_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(BootstrapUserContextInitializer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_EASY_UNLOCK_BOOTSTRAP_USER_CONTEXT_INITIALIZER_H_