Change WebAuthFlow to use the new WebContentsObserver navigation notifications.

chrome/browser/extensions/api/identity/web_auth_flow.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_EXTENSIONS_API_IDENTITY_WEB_AUTH_FLOW_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_WEB_AUTH_FLOW_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 85 matching lines @@
   void OnAppWindowAdded(AppWindow* app_window) override;
   void OnAppWindowRemoved(AppWindow* app_window) override;
 
   // NotificationObserver implementation.
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // WebContentsObserver implementation.
   void DidStopLoading() override;
-  void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) override;
   void RenderProcessGone(base::TerminationStatus status) override;
-  void DidStartProvisionalLoadForFrame(
-      content::RenderFrameHost* render_frame_host,
-      const GURL& validated_url,
-      bool is_error_page,
-      bool is_iframe_srcdoc) 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 DidGetRedirectForResourceRequest(
       const content::ResourceRedirectDetails& details) override;
   void TitleWasSet(content::NavigationEntry* entry, bool explicit_set) override;
+  void DidStartNavigation(
+      content::NavigationHandle* navigation_handle) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
 
   void BeforeUrlLoaded(const GURL& url);
   void AfterUrlLoaded();
 
   Delegate* delegate_;
   Profile* profile_;
   GURL provider_url_;
   Mode mode_;
 
   AppWindow* app_window_;
   std::string app_window_key_;
   bool embedded_window_created_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(WebAuthFlow);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_WEB_AUTH_FLOW_H_