Start splitting out WebUI into an implementation class and an interface that each page implements...

chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc

 // Copyright (c) 2011 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/chromeos/mobile_setup_ui.h"
 
 #include <algorithm>
 #include <map>
 #include <string>
 
@@ skipping 1368 matching lines @@
 
   StartActivation();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // MobileSetupUI
 //
 ////////////////////////////////////////////////////////////////////////////////
 
-MobileSetupUI::MobileSetupUI(WebContents* contents) : WebUI(contents) {
+MobileSetupUI::MobileSetupUI(WebContents* contents) : WebUI(contents, this) {
   chromeos::CellularNetwork* network = GetCellularNetwork();
   std::string service_path = network ? network->service_path() : std::string();
-  MobileSetupHandler* handler = new MobileSetupHandler(service_path);
-  AddMessageHandler(handler);
+  AddMessageHandler(new MobileSetupHandler(service_path));
   MobileSetupUIHTMLSource* html_source =
       new MobileSetupUIHTMLSource(service_path);
 
   // Set up the chrome://mobilesetup/ source.
   Profile* profile = Profile::FromBrowserContext(contents->GetBrowserContext());
   profile->GetChromeURLDataManager()->AddDataSource(html_source);
 }
 
 void MobileSetupUI::RenderViewCreated(RenderViewHost* host) {
-  WebUI::RenderViewCreated(host);
   // Destroyed by the corresponding RenderViewHost.
   new PortalFrameLoadObserver(host, web_contents()->GetWebUI());
 }