Integrate About page into Settings for Chrome OS settings in a window.

chrome/browser/ui/webui/help/help_handler.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_UI_WEBUI_HELP_HELP_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_HELP_HELP_HANDLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/webui/help/version_updater.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/version_loader.h"
 #endif  // defined(OS_CHROMEOS)
 
-namespace content {
-class WebUIDataSource;
-}
-
 // WebUI message handler for the help page.
 class HelpHandler : public content::WebUIMessageHandler,
                     public content::NotificationObserver {
  public:
   HelpHandler();
   virtual ~HelpHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
-  // Fills |source| with string values for the UI.
-  void GetLocalizedValues(content::WebUIDataSource* source);
+  // Adds string values for the UI to |localized_strings|.
+  static void GetLocalizedValues(base::DictionaryValue* localized_strings);

[Dan Beam, 2014/08/13 02:50:46]

Y U NO FORWARD DECLARE DictionaryValue?

[michaelpg, 2014/08/13 08:12:11]

let me know if this is overboard or correct

 
   // NotificationObserver implementation.
   virtual void Observe(int type, const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
   // Initializes querying values for the page.
   void OnPageLoaded(const base::ListValue* args);
 
 #if defined(OS_MACOSX)
@@ skipping 49 matching lines @@
   base::CancelableTaskTracker tracker_;
 #endif  // defined(OS_CHROMEOS)
 
   // Used for callbacks.
   base::WeakPtrFactory<HelpHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HelpHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_HELP_HELP_HANDLER_H_