Convert MobileSetupUI to use the new navigation callbacks.

chrome/browser/ui/webui/chromeos/mobile_setup_ui.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_CHROMEOS_MOBILE_SETUP_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_MOBILE_SETUP_UI_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_ui_controller.h"
 
 // A custom WebUI that defines datasource for mobile setup registration page
 // that is used in Chrome OS activate modem and perform plan subscription tasks.
 class MobileSetupUI : public content::WebUIController,
                       public content::WebContentsObserver,
                       public base::SupportsWeakPtr<MobileSetupUI> {
  public:
   explicit MobileSetupUI(content::WebUI* web_ui);
 
  private:
   // content::WebContentsObserver overrides.
-  void DidCommitProvisionalLoadForFrame(
-      content::RenderFrameHost* render_frame_host,
-      const GURL& url,
-      ui::PageTransition transition_type) override;
-  void DidFailProvisionalLoad(content::RenderFrameHost* render_frame_host,
-                              const GURL& validated_url,
-                              int error_code,
-                              const base::string16& error_description,
-                              bool was_ignored_by_handler) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
 
   DISALLOW_COPY_AND_ASSIGN(MobileSetupUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_MOBILE_SETUP_UI_H_