Update {virtual,override,final} to follow C++11 style.

android_webview/native/permission/permission_request_handler.h

 // Copyright 2014 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 ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H
 #define ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H
 
 #include <map>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "url/gurl.h"
 
 namespace android_webview {
 
 class AwPermissionRequest;
 class AwPermissionRequestDelegate;
 class PermissionRequestHandlerClient;
 
 // This class is used to send the permission requests, or cancel ongoing
 // requests.
 // It is owned by AwContents and has 1x1 mapping to AwContents. All methods
 // are running on UI thread.
 class PermissionRequestHandler : public content::WebContentsObserver {
  public:
   PermissionRequestHandler(PermissionRequestHandlerClient* client,
                            content::WebContents* aw_contents);
-  virtual ~PermissionRequestHandler();
+  ~PermissionRequestHandler() override;
 
   // Send the given |request| to PermissionRequestHandlerClient.
   void SendRequest(scoped_ptr<AwPermissionRequestDelegate> request);
 
   // Cancel the ongoing request initiated by |origin| for accessing |resources|.
   void CancelRequest(const GURL& origin, int64 resources);
 
   // Allow |origin| to access the |resources|.
   void PreauthorizePermission(const GURL& origin, int64 resources);
 
   // WebContentsObserver
-  virtual void NavigationEntryCommitted(
+  void NavigationEntryCommitted(
       const content::LoadCommittedDetails& load_details) override;
 
  private:
   friend class TestPermissionRequestHandler;
 
   typedef std::vector<base::WeakPtr<AwPermissionRequest> >::iterator
       RequestIterator;
 
   // Return the request initiated by |origin| for accessing |resources|.
   RequestIterator FindRequest(const GURL& origin, int64 resources);
@@ skipping 19 matching lines @@
   // The unique id of the active NavigationEntry of the WebContents that we were
   // opened for. Used to help expire on requests.
   int contents_unique_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionRequestHandler);
 };
 
 }  // namespace android_webivew
 
 #endif  // ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H