Standardize usage of virtual/override/final in chrome/

chrome/test/base/find_in_page_observer.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_TEST_BASE_FIND_IN_PAGE_OBSERVER_H_
 #define CHROME_TEST_BASE_FIND_IN_PAGE_OBSERVER_H_
 
 #include "base/memory/ref_counted.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ skipping 10 matching lines @@
 // are available. Typical usage:
 // FindInPageWchar();
 // FindInPageNotificationObserver observer(tab);
 // observer.Wait();
 
 // Always construct FindInPageNotificationObserver AFTER initiating the search.
 // It captures the current search ID in constructor and waits for it only.
 class FindInPageNotificationObserver : public content::NotificationObserver {
  public:
   explicit FindInPageNotificationObserver(content::WebContents* parent_tab);
-  virtual ~FindInPageNotificationObserver();
+  ~FindInPageNotificationObserver() override;
 
   void Wait();
 
   int active_match_ordinal() const { return active_match_ordinal_; }
   int number_of_matches() const { return number_of_matches_; }
   gfx::Rect selection_rect() const { return selection_rect_; }
 
  private:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   content::NotificationRegistrar registrar_;
   // We will at some point (before final update) be notified of the ordinal and
   // we need to preserve it so we can send it later.
   int active_match_ordinal_;
   int number_of_matches_;
   gfx::Rect selection_rect_;
   // The id of the current find request, obtained from WebContents. Allows us
   // to monitor when the search completes.
   int current_find_request_id_;
   scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
 
   bool seen_; // true after transition to expected state has been seen
   bool running_; // indicates whether message loop is running
 
   DISALLOW_COPY_AND_ASSIGN(FindInPageNotificationObserver);
 };
 
 }  // namespace ui_test_utils
 
 #endif  // CHROME_TEST_BASE_FIND_IN_PAGE_OBSERVER_H_