Remove configuration policy on iOS.

ios/chrome/browser/application_context_impl.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 IOS_CHROME_BROWSER_APPLICATION_CONTEXT_IMPL_H_
 #define IOS_CHROME_BROWSER_APPLICATION_CONTEXT_IMPL_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 25 matching lines @@
   // ApplicationContext implementation.
   void OnAppEnterForeground() override;
   void OnAppEnterBackground() override;
   bool WasLastShutdownClean() override;
   PrefService* GetLocalState() override;
   net::URLRequestContextGetter* GetSystemURLRequestContext() override;
   const std::string& GetApplicationLocale() override;
   ios::ChromeBrowserStateManager* GetChromeBrowserStateManager() override;
   metrics::MetricsService* GetMetricsService() override;
   variations::VariationsService* GetVariationsService() override;
-  policy::BrowserPolicyConnector* GetBrowserPolicyConnector() override;
-  policy::PolicyService* GetPolicyService() override;
   rappor::RapporService* GetRapporService() override;
   net_log::ChromeNetLog* GetNetLog() override;
   network_time::NetworkTimeTracker* GetNetworkTimeTracker() override;
 
   void CreateLocalState();
 
   base::ThreadChecker thread_checker_;
   scoped_ptr<PrefService> local_state_;
   scoped_ptr<net_log::ChromeNetLog> net_log_;
   scoped_ptr<network_time::NetworkTimeTracker> network_time_tracker_;
   std::string application_locale_;
 
-#if !defined(ENABLE_CONFIGURATION_POLICY)
-  // Must be destroyed after |local_state_|.
-  // This is a stub when policy is not enabled. Otherwise the PolicyService is
-  // owned by the BrowserPolicyConnector and this is not used.
-  scoped_ptr<policy::PolicyService> policy_service_;
-#endif
-
   // Sequenced task runner for local state related I/O tasks.
   const scoped_refptr<base::SequencedTaskRunner> local_state_task_runner_;
 
   bool was_last_shutdown_clean_;
   bool created_local_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ApplicationContextImpl);
 };
 
 #endif  // IOS_CHROME_BROWSER_APPLICATION_CONTEXT_IMPL_H_