Demo UI made with a help of WUG toolkit (DO NOT SEND TO CQ).

chrome/browser/ui/webui/chrome_web_ui_controller_factory.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/chrome_web_ui_controller_factory.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/about_flags.h"
 #include "chrome/browser/bookmarks/enhanced_bookmarks_features.h"
 #include "chrome/browser/dom_distiller/dom_distiller_service_factory.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/webui/about_ui.h"
 #include "chrome/browser/ui/webui/app_launcher_page_ui.h"
 #include "chrome/browser/ui/webui/bookmarks_ui.h"
 #include "chrome/browser/ui/webui/components_ui.h"
 #include "chrome/browser/ui/webui/constrained_web_dialog_ui.h"
 #include "chrome/browser/ui/webui/copresence_ui.h"
 #include "chrome/browser/ui/webui/crashes_ui.h"
+#include "chrome/browser/ui/webui/demo_ui/demo_ui.h"
 #include "chrome/browser/ui/webui/device_log_ui.h"
 #include "chrome/browser/ui/webui/domain_reliability_internals_ui.h"
 #include "chrome/browser/ui/webui/downloads_ui.h"
 #include "chrome/browser/ui/webui/flags_ui.h"
 #include "chrome/browser/ui/webui/flash_ui.h"
 #include "chrome/browser/ui/webui/gcm_internals_ui.h"
 #include "chrome/browser/ui/webui/help/help_ui.h"
 #include "chrome/browser/ui/webui/history_ui.h"
 #include "chrome/browser/ui/webui/identity_internals_ui.h"
 #include "chrome/browser/ui/webui/instant_ui.h"
@@ skipping 295 matching lines @@
   if (url.host() == chrome::kChromeUISyncInternalsHost)
     return &NewWebUI<SyncInternalsUI>;
   if (url.host() == chrome::kChromeUISyncResourcesHost)
     return &NewWebUI<WebDialogUI>;
   if (url.host() == chrome::kChromeUITranslateInternalsHost)
     return &NewWebUI<TranslateInternalsUI>;
   if (url.host() == chrome::kChromeUIUserActionsHost)
     return &NewWebUI<UserActionsUI>;
   if (url.host() == chrome::kChromeUIVersionHost)
     return &NewWebUI<VersionUI>;
+  if (url.host() == chrome::kChromeUIDemoHost)
+    return &NewWebUI<DemoUI>;
 
   /****************************************************************************
    * OS Specific #defines
    ***************************************************************************/
 #if !defined(OS_ANDROID)
   // AppLauncherPage is not needed on Android.
   if (url.host() == chrome::kChromeUIAppLauncherPageHost &&
       profile && extensions::ExtensionSystem::Get(profile)->
           extension_service()) {
     return &NewWebUI<AppLauncherPageUI>;
@@ skipping 373 matching lines @@
 #endif
 
   // Android doesn't use the plugins pages.
   if (page_url.host() == chrome::kChromeUIPluginsHost)
     return PluginsUI::GetFaviconResourceBytes(scale_factor);
 
 #endif
 
   return NULL;
 }