Use stub impl when libcros fails to load

chrome/browser/chromeos/cros/power_library.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_CHROMEOS_CROS_POWER_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_POWER_LIBRARY_H_
 #pragma once
 
 #include "base/callback.h"
 
@@ skipping 50 matching lines @@
 
   // Enable/disable screen lock for current session.
   virtual void EnableScreenLock(bool enable) = 0;
 
   // Requests restart of the system.
   virtual void RequestRestart() = 0;
 
   // Requests shutdown of the system.
   virtual void RequestShutdown() = 0;
 
+  // UI initiated request for status update.
+  virtual void RequestStatusUpdate() = 0;

[satorux1, 2011/09/16 20:05:55]

Is this a new functionality introduced? If so, wouldn't it be better to do this
in a separate patch?

[stevenjb, 2011/09/16 21:44:24]

Will do.

+
   // Factory function, creates a new instance and returns ownership.
   // For normal usage, access the singleton via CrosLibrary::Get().
   static PowerLibrary* GetImpl(bool stub);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_POWER_LIBRARY_H_