Use PageManager in About page

chrome/browser/ui/webui/help/help_ui.cc

 // 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.
 
 #include "chrome/browser/ui/webui/help/help_ui.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/help/help_handler.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "grit/browser_resources.h"
 
 namespace {
 
 content::WebUIDataSource* CreateAboutPageHTMLSource() {
   content::WebUIDataSource* source =
       content::WebUIDataSource::Create(chrome::kChromeUIHelpFrameHost);
 
   source->SetJsonPath("strings.js");
   source->SetUseJsonJSFormatV2();
   source->AddResourcePath("help.js", IDR_HELP_JS);
-  source->AddResourcePath("help_focus_manager.js", IDR_HELP_FOCUS_MANAGER_JS);
-  source->AddResourcePath("help_base_page.js", IDR_HELP_BASE_PAGE_JS);
+  source->AddResourcePath("help_page.js", IDR_HELP_PAGE_JS);
   source->AddResourcePath("channel_change_page.js", IDR_CHANNEL_CHANGE_PAGE_JS);
   source->SetDefaultResource(IDR_HELP_HTML);
   source->DisableDenyXFrameOptions();
   return source;
 }
 
 }  // namespace
 
 HelpUI::HelpUI(content::WebUI* web_ui)
     : WebUIController(web_ui) {
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource* source = CreateAboutPageHTMLSource();
 
   HelpHandler* handler = new HelpHandler();
   handler->GetLocalizedValues(source);
   content::WebUIDataSource::Add(profile, source);
   web_ui->AddMessageHandler(handler);
 }
 
 HelpUI::~HelpUI() {
 }