Standardize usage of virtual/override/final in chrome/browser/

chrome/browser/favicon/favicon_tab_helper.h

Index: chrome/browser/favicon/favicon_tab_helper.h
diff --git a/chrome/browser/favicon/favicon_tab_helper.h b/chrome/browser/favicon/favicon_tab_helper.h
index b0d04fabe866e14f57f38cd7924e74d8c6d2c1e1..4a4aa1babcfebc3ea397708c18042f7aee172866 100644
--- a/chrome/browser/favicon/favicon_tab_helper.h
+++ b/chrome/browser/favicon/favicon_tab_helper.h
@@ -38,7 +38,7 @@ class FaviconTabHelper : public content::WebContentsObserver,
                          public FaviconDriver,
                          public content::WebContentsUserData<FaviconTabHelper> {
  public:
-  virtual ~FaviconTabHelper();
+  ~FaviconTabHelper() override;
 
   // Initiates loading the favicon for the specified url.
   void FetchFavicon(const GURL& url);
@@ -64,23 +64,23 @@ class FaviconTabHelper : public content::WebContentsObserver,
 
   // content::WebContentsObserver override. Must be public, because also
   // called from PrerenderContents.
-  virtual void DidUpdateFaviconURL(
+  void DidUpdateFaviconURL(
       const std::vector<content::FaviconURL>& candidates) override;
 
   // Saves the favicon for the current page.
   void SaveFavicon();
 
   // FaviconDriver methods.
-  virtual int StartDownload(const GURL& url, int max_bitmap_size) override;
-  virtual void NotifyFaviconUpdated(bool icon_url_changed) override;
-  virtual bool IsOffTheRecord() override;
-  virtual const gfx::Image GetActiveFaviconImage() override;
-  virtual const GURL GetActiveFaviconURL() override;
-  virtual bool GetActiveFaviconValidity() override;
-  virtual const GURL GetActiveURL() override;
-  virtual void SetActiveFaviconImage(gfx::Image image) override;
-  virtual void SetActiveFaviconURL(GURL url) override;
-  virtual void SetActiveFaviconValidity(bool validity) override;
+  int StartDownload(const GURL& url, int max_bitmap_size) override;
+  void NotifyFaviconUpdated(bool icon_url_changed) override;
+  bool IsOffTheRecord() override;
+  const gfx::Image GetActiveFaviconImage() override;
+  const GURL GetActiveFaviconURL() override;
+  bool GetActiveFaviconValidity() override;
+  const GURL GetActiveURL() override;
+  void SetActiveFaviconImage(gfx::Image image) override;
+  void SetActiveFaviconURL(GURL url) override;
+  void SetActiveFaviconValidity(bool validity) override;
 
   // Favicon download callback.
   void DidDownloadFavicon(
@@ -95,10 +95,10 @@ class FaviconTabHelper : public content::WebContentsObserver,
   friend class content::WebContentsUserData<FaviconTabHelper>;
 
   // content::WebContentsObserver overrides.
-  virtual void DidStartNavigationToPendingEntry(
+  void DidStartNavigationToPendingEntry(
       const GURL& url,
       content::NavigationController::ReloadType reload_type) override;
-  virtual void DidNavigateMainFrame(
+  void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;