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

chrome/browser/ui/cocoa/tab_contents/web_drag_bookmark_handler_mac.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_UI_COCOA_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_MAC_H_
 
 #include "base/compiler_specific.h"
 #include "components/bookmarks/browser/bookmark_node_data.h"
 #include "content/public/browser/web_drag_dest_delegate.h"
 
 class BookmarkTabHelper;
 
 namespace content {
 class WebContents;
 }
 
 // Chrome needs to intercept content drag events so it can dispatch them to the
 // bookmarks and extensions system.
 class WebDragBookmarkHandlerMac : public content::WebDragDestDelegate {
  public:
   WebDragBookmarkHandlerMac();
-  virtual ~WebDragBookmarkHandlerMac();
+  ~WebDragBookmarkHandlerMac() override;
 
   // Overridden from content::WebDragDestDelegate:
-  virtual void DragInitialize(content::WebContents* contents) override;
-  virtual void OnDragOver() override;
-  virtual void OnDragEnter() override;
-  virtual void OnDrop() override;
-  virtual void OnDragLeave() override;
+  void DragInitialize(content::WebContents* contents) override;
+  void OnDragOver() override;
+  void OnDragEnter() override;
+  void OnDrop() override;
+  void OnDragLeave() override;
 
  private:
   // The BookmarkTabHelper.
   // Weak reference; may be NULL if the contents don't have a
   // BookmarkTabHelper (e.g. WebUI dialogs).
   BookmarkTabHelper* bookmark_tab_helper_;
 
   content::WebContents* web_contents_;
 
   // The bookmark data for the current tab. This will be empty if there is not
   // a native bookmark drag.
   bookmarks::BookmarkNodeData bookmark_drag_data_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDragBookmarkHandlerMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_MAC_H_