Added UI to enable debugging features on CrOS

chrome/browser/chromeos/login/help_app_launcher.h

 // Copyright (c) 2012 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_LOGIN_HELP_APP_LAUNCHER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_HELP_APP_LAUNCHER_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 20 matching lines @@
     // Showed whenever there're troubles signing in (online case).
     HELP_CANT_ACCESS_ACCOUNT = 188036,
     // Showed in case when account was disabled.
     HELP_ACCOUNT_DISABLED = 188756,
     // Showed in case when hosted account is used.
     HELP_HOSTED_ACCOUNT = 1054228,
     // Showed as "Learn more" about enterprise enrolled devices.
     HELP_ENTERPRISE = 2535613,
     // Shown at reset screen as "Learn more" about powerwash/rollback options.
     HELP_POWERWASH = 183084,
+    // Shown at enable debugging screen as "Learn more" about developer options.
+    // TODO(zelidrag): http://crbug.com/431950, show the link once we
+    // create HC article.
+    HELP_ENABLE_DEBUGGING = -1,
   };
 
   // Parent window is used to show dialog.
   explicit HelpAppLauncher(gfx::NativeWindow parent_window);
 
   // Shows specified help topic.
   void ShowHelpTopic(HelpTopic help_topic_id);
 
  protected:
   virtual ~HelpAppLauncher();
 
  private:
   friend class base::RefCountedThreadSafe<HelpAppLauncher>;
 
   // Shows help topic dialog for specified GURL.
   void ShowHelpTopicDialog(Profile* profile, const GURL& topic_url);
 
   // Parent window which is passed to help dialog.
   gfx::NativeWindow parent_window_;
 
   DISALLOW_COPY_AND_ASSIGN(HelpAppLauncher);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_HELP_APP_LAUNCHER_H_