[Cleanup] Clean up Easy Unlock code a bit.

chrome/browser/signin/easy_unlock_service_regular.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_SIGNIN_EASY_UNLOCK_SERVICE_REGULAR_H_
 #define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_REGULAR_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 41 matching lines @@
   void RunTurnOffFlow() override;
   void ResetTurnOffFlow() override;
   TurnOffFlowStatus GetTurnOffFlowStatus() const override;
   std::string GetChallenge() const override;
   std::string GetWrappedSecret() const override;
   void RecordEasySignInOutcome(const std::string& user_id,
                                bool success) const override;
   void RecordPasswordLoginEvent(const std::string& user_id) const override;
   void InitializeInternal() override;
   void ShutdownInternal() override;
-  bool IsAllowedInternal() override;
+  bool IsAllowedInternal() const override;
 
   // Opens the component packaged app responsible for setting up Smart Lock.
   void OpenSetupApp();
 
   // Callback when the controlling pref changes.
   void OnPrefsChanged();
 
   // Sets the new turn-off flow status.
   void SetTurnOffFlowStatus(TurnOffFlowStatus status);
 
@@ skipping 24 matching lines @@
 
   TurnOffFlowStatus turn_off_flow_status_;
   scoped_ptr<proximity_auth::CryptAuthClient> cryptauth_client_;
 
   base::WeakPtrFactory<EasyUnlockServiceRegular> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockServiceRegular);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_REGULAR_H_