MD Settings: convert startup pages to use BrowserProxy/WebUIListeners

chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc

 // Copyright 2015 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/settings/settings_startup_pages_handler.h"
 
 #include <string>
 #include <vector>
 
 #include "chrome/browser/prefs/session_startup_pref.h"
@@ skipping 41 matching lines @@
   for (int i = 0; i < page_count; ++i) {
     scoped_ptr<base::DictionaryValue> entry(new base::DictionaryValue());
     entry->SetString("title", startup_custom_pages_table_model_.GetText(i, 0));
     entry->SetString("url", urls[i].spec());
     entry->SetString("tooltip",
                      startup_custom_pages_table_model_.GetTooltip(i));
     entry->SetInteger("modelIndex", i);
     startup_pages.Append(entry.release());
   }
 
-  web_ui()->CallJavascriptFunction("Settings.updateStartupPages",
+  web_ui()->CallJavascriptFunction("cr.webUIListenerCallback",
+                                   base::StringValue("update-startup-pages"),
                                    startup_pages);
 }
 
 void StartupPagesHandler::OnItemsChanged(int start, int length) {
   OnModelChanged();
 }
 
 void StartupPagesHandler::OnItemsAdded(int start, int length) {
   OnModelChanged();
 }
@@ skipping 84 matching lines @@
 
 void StartupPagesHandler::UpdateStartupPages() {
   const SessionStartupPref startup_pref = SessionStartupPref::GetStartupPref(
       Profile::FromWebUI(web_ui())->GetPrefs());
   startup_custom_pages_table_model_.SetURLs(startup_pref.urls);
   // The change will go to the JS code in the
   // StartupPagesHandler::OnModelChanged() method.
 }
 
 }  // namespace settings