Show ChromeOS bios firmware in about dialog.

chrome/browser/ui/webui/options/about_page_handler.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_UI_WEBUI_OPTIONS_ABOUT_PAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_ABOUT_PAGE_HANDLER_H_
 
 #include <string>
 
 #include "chrome/browser/ui/webui/options/options_ui.h"
@@ skipping 24 matching lines @@
 #if defined(OS_CHROMEOS)
   // Initiates update check.
   void CheckNow(const ListValue* args);
 
   // Restarts the system.
   void RestartNow(const ListValue* args);
 
   // Callback from chromeos::VersionLoader giving the version.
   void OnOSVersion(chromeos::VersionLoader::Handle handle,
                    std::string version);
+  void OnOSFirmware(chromeos::VersionLoader::Handle handle,
+                    std::string firmware);
   void UpdateStatus(const chromeos::UpdateLibrary::Status& status);
 
   // UpdateEngine Callback handler.
   static void UpdateSelectedChannel(void* user_data, const char* channel);
 
   // Handles asynchronously loading the version.
   chromeos::VersionLoader loader_;
 
   // Used to request the version.
   CancelableRequestConsumer consumer_;
 
   // Update Observer
   class UpdateObserver;
   scoped_ptr<UpdateObserver> update_observer_;
 
   int progress_;
   bool sticky_;
   bool started_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(AboutPageHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_ABOUT_PAGE_HANDLER_H_