Convert FaviconDownloader to use the new navigation callbacks.

chrome/browser/extensions/favicon_downloader.h

 // Copyright 2013 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_FAVICON_DOWNLOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_FAVICON_DOWNLOADER_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 53 matching lines @@
   void FetchIcons(const std::vector<GURL>& urls);
 
   // Icon download callback.
   void DidDownloadFavicon(int id,
                           int http_status_code,
                           const GURL& image_url,
                           const std::vector<SkBitmap>& bitmaps,
                           const std::vector<gfx::Size>& original_bitmap_sizes);
 
   // content::WebContentsObserver overrides:
-  void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
   void DidUpdateFaviconURL(
       const std::vector<content::FaviconURL>& candidates) override;
 
   // Whether we need to fetch favicons from the renderer.
   bool need_favicon_urls_;
 
   // URLs that aren't given by WebContentsObserver::DidUpdateFaviconURL() that
   // should be used for this favicon. This is necessary in order to get touch
   // icons on non-android environments.
   std::vector<GURL> extra_favicon_urls_;
@@ skipping 10 matching lines @@
 
   // Callback to run on favicon download completion.
   FaviconDownloaderCallback callback_;
 
   base::WeakPtrFactory<FaviconDownloader> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FaviconDownloader);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_FAVICON_DOWNLOADER_H_