Fix ChromeOS clang build after original change was reverted.

chrome/browser/automation/testing_automation_provider.h

 // Copyright (c) 2011 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_AUTOMATION_TESTING_AUTOMATION_PROVIDER_H_
 #define CHROME_BROWSER_AUTOMATION_TESTING_AUTOMATION_PROVIDER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 1326 matching lines @@
   void SetVolume(base::DictionaryValue* args, IPC::Message* reply_message);
 
   void SetMute(base::DictionaryValue* args, IPC::Message* reply_message);
 
   void CaptureProfilePhoto(Browser* browser,
                            DictionaryValue* args,
                            IPC::Message* reply_message);
 
   // chromeos::PowerManagerClient::Observer overrides.
   virtual void PowerChanged(const chromeos::PowerSupplyStatus& status) OVERRIDE;
-  virtual void LockScreen() OVERRIDE;
-  virtual void UnlockScreen() OVERRIDE;
 
 #endif  // defined(OS_CHROMEOS)
 
   void WaitForTabCountToBecome(int browser_handle,
                                int target_tab_count,
                                IPC::Message* reply_message);
 
   void WaitForInfoBarCount(int tab_handle,
                            size_t target_count,
                            IPC::Message* reply_message);
@@ skipping 53 matching lines @@
   // Used to enumerate browser profiles.
   scoped_refptr<ImporterList> importer_list_;
 
   // The stored data for the ImportSettings operation.
   ImportSettingsData import_settings_data_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingAutomationProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_TESTING_AUTOMATION_PROVIDER_H_