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

android_webview/native/permission/media_access_permission_request.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_MEDIA_ACCESS_PERMISSION_REQUEST_H
 #define ANDROID_WEBVIEW_NATIVE_PERMISSION_MEDIA_ACCESS_PERMISSION_REQUEST_H
 
 #include "android_webview/native/permission/aw_permission_request_delegate.h"
 #include "base/callback.h"
 #include "content/public/common/media_stream_request.h"
 
 namespace android_webview {
 
 // The AwPermissionRequestDelegate implementation for media access permission
 // request.
 class MediaAccessPermissionRequest : public AwPermissionRequestDelegate {
  public:
   MediaAccessPermissionRequest(const content::MediaStreamRequest& request,
                                const content::MediaResponseCallback& callback);
-  virtual ~MediaAccessPermissionRequest();
+  ~MediaAccessPermissionRequest() override;
 
   // AwPermissionRequestDelegate implementation.
-  virtual const GURL& GetOrigin() override;
-  virtual int64 GetResources() override;
-  virtual void NotifyRequestResult(bool allowed) override;
+  const GURL& GetOrigin() override;
+  int64 GetResources() override;
+  void NotifyRequestResult(bool allowed) override;
 
  private:
   friend class TestMediaAccessPermissionRequest;
 
   const content::MediaStreamRequest request_;
   const content::MediaResponseCallback callback_;
 
   // For test only.
   content::MediaStreamDevices audio_test_devices_;
   content::MediaStreamDevices video_test_devices_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaAccessPermissionRequest);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_PERMISSION_MEDIA_ACCESS_PERMISSION_REQUEST_H