cros: Remove the unneed default ctor from ScreenLockLibrary interface.

chrome/browser/chromeos/cros/mock_screen_lock_library.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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_CHROMEOS_CROS_MOCK_SCREEN_LOCK_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_MOCK_SCREEN_LOCK_LIBRARY_H_
 #pragma once
 
 #include "chrome/browser/chromeos/cros/screen_lock_library.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace chromeos {
 
 class MockScreenLockLibrary : public ScreenLockLibrary {
  public:
   MockScreenLockLibrary();
   virtual ~MockScreenLockLibrary();
 
+  MOCK_METHOD0(Init, void());
+
   MOCK_METHOD1(AddObserver, void(Observer*));
   MOCK_METHOD1(RemoveObserver, void(Observer*));
 
   MOCK_METHOD0(NotifyScreenLockRequested, void());
   MOCK_METHOD0(NotifyScreenLockCompleted, void());
   MOCK_METHOD0(NotifyScreenUnlockRequested, void());
   MOCK_METHOD0(NotifyScreenUnlockCompleted, void());
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_MOCK_SCREEN_LOCK_LIBRARY_H_