Add a pref checkbox to enable/disable screen lock for ChromeOs.

chrome/browser/chromeos/cros/cros_mock.h

 // Copyright (c) 2010 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_CROS_CROS_MOCK_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_CROS_MOCK_H_
 
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/test/in_process_browser_test.h"
 #include "cros/chromeos_input_method.h"
@@ skipping 59 matching lines @@
   // Add a call to this method in your SetUpInProcessBrowserTestFixture.
   // They are all configured with RetiresOnSaturation().
   // Once such expectation is used it won't block expectations you've defined.
   void SetStatusAreaMocksExpectations();
 
   // Methods to setup minimal mocks expectations for status area.
   void SetKeyboardLibraryStatusAreaExpectations();
   void SetInputMethodLibraryStatusAreaExpectations();
   void SetNetworkLibraryStatusAreaExpectations();
   void SetPowerLibraryStatusAreaExpectations();
+  void SetPowerLibraryExpectations();
   void SetSpeechSynthesisLibraryExpectations();
   void SetSystemLibraryStatusAreaExpectations();
   void SetSystemLibraryExpectations();
   void SetTouchpadLibraryExpectations();
 
   void TearDownMocks();
 
   // TestApi gives access to CrosLibrary private members.
   chromeos::CrosLibrary::TestApi* test_api();
 
@@ skipping 10 matching lines @@
   MockSystemLibrary* mock_system_library_;
   MockTouchpadLibrary* mock_touchpad_library_;
 
   ImePropertyList ime_properties_;
   DISALLOW_COPY_AND_ASSIGN(CrosMock);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_CROS_MOCK_H_