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

media/video/capture/android/video_capture_device_factory_android.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 MEDIA_VIDEO_CAPTURE_ANDROID_VIDEO_CAPTURE_DEVICE_FACTORY_ANDROID_H_
 #define MEDIA_VIDEO_CAPTURE_ANDROID_VIDEO_CAPTURE_DEVICE_FACTORY_ANDROID_H_
 
 #include "media/video/capture/video_capture_device_factory.h"
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
 #include "media/video/capture/video_capture_device.h"
 
 namespace media {
 
 // VideoCaptureDeviceFactory on Android. This class implements the static
 // VideoCapture methods and the factory of VideoCaptureAndroid.
 class MEDIA_EXPORT VideoCaptureDeviceFactoryAndroid :
   public VideoCaptureDeviceFactory {
  public:
   static bool RegisterVideoCaptureDeviceFactory(JNIEnv* env);
   static base::android::ScopedJavaLocalRef<jobject> createVideoCaptureAndroid(
       int id,
       jlong nativeVideoCaptureDeviceAndroid);
 
   VideoCaptureDeviceFactoryAndroid() {}
-  virtual ~VideoCaptureDeviceFactoryAndroid() {}
+  ~VideoCaptureDeviceFactoryAndroid() override {}
 
-  virtual scoped_ptr<VideoCaptureDevice> Create(
+  scoped_ptr<VideoCaptureDevice> Create(
       const VideoCaptureDevice::Name& device_name) override;
-  virtual void GetDeviceNames(VideoCaptureDevice::Names* device_names) override;
-  virtual void GetDeviceSupportedFormats(
+  void GetDeviceNames(VideoCaptureDevice::Names* device_names) override;
+  void GetDeviceSupportedFormats(
       const VideoCaptureDevice::Name& device,
       VideoCaptureFormats* supported_formats) override;
 
  private:
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceFactoryAndroid);};
 }  // namespace media
 
 #endif  // MEDIA_VIDEO_CAPTURE_ANDROID_VIDEO_CAPTURE_DEVICE_FACTORY_ANDROID_H_