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

chrome/browser/ui/search/instant_page.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_UI_SEARCH_INSTANT_PAGE_H_
 #define CHROME_BROWSER_UI_SEARCH_INSTANT_PAGE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 36 matching lines @@
 
     // Called when the page is about to navigate to |url|.
     virtual void InstantPageAboutToNavigateMainFrame(
         const content::WebContents* contents,
         const GURL& url) = 0;
 
    protected:
     virtual ~Delegate();
   };
 
-  virtual ~InstantPage();
+  ~InstantPage() override;
 
   // Returns the Instant URL that was loaded for this page. Returns the empty
   // string if no URL was explicitly loaded as is the case for InstantTab.
   virtual const std::string& instant_url() const;
 
   // Returns true if the page is known to support the Instant API. This starts
   // out false, and is set to true whenever we get any message from the page.
   // Once true, it never becomes false (the page isn't expected to drop API
   // support suddenly).
   virtual bool supports_instant() const;
@@ skipping 24 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest, IsLocal);
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
                            DetermineIfPageSupportsInstant_Local);
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
                            DetermineIfPageSupportsInstant_NonLocal);
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
                            PageURLDoesntBelongToInstantRenderer);
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest, PageSupportsInstant);
 
   // Overridden from content::WebContentsObserver:
-  virtual void DidCommitProvisionalLoadForFrame(
+  void DidCommitProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,
       const GURL& url,
       ui::PageTransition transition_type) override;
 
   // Overridden from SearchModelObserver:
-  virtual void ModelChanged(const SearchModel::State& old_state,
-                            const SearchModel::State& new_state) override;
+  void ModelChanged(const SearchModel::State& old_state,
+                    const SearchModel::State& new_state) override;
 
   // Update the status of Instant support.
   void InstantSupportDetermined(bool supports_instant);
 
   void ClearContents();
 
   // TODO(kmadhusu): Remove |profile_| from here and update InstantNTP to get
   // |profile| from InstantNTPPrerenderer.
   Profile* profile_;
 
   Delegate* const delegate_;
   const std::string instant_url_;
   const bool is_incognito_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantPage);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_INSTANT_PAGE_H_