Standardize usage of virtual/override/final in content/browser/

content/browser/renderer_host/media/media_stream_manager.h

Index: content/browser/renderer_host/media/media_stream_manager.h
diff --git a/content/browser/renderer_host/media/media_stream_manager.h b/content/browser/renderer_host/media/media_stream_manager.h
index d5dbf9fed57acdf4b3c818d3aabd96ddeb2df298..78c722e713e28af58923680618496286f5d7100e 100644
--- a/content/browser/renderer_host/media/media_stream_manager.h
+++ b/content/browser/renderer_host/media/media_stream_manager.h
@@ -72,7 +72,7 @@ class CONTENT_EXPORT MediaStreamManager
       MediaRequestResponseCallback;
 
   explicit MediaStreamManager(media::AudioManager* audio_manager);
-  virtual ~MediaStreamManager();
+  ~MediaStreamManager() override;
 
   // Used to access VideoCaptureManager.
   VideoCaptureManager* video_capture_manager();
@@ -165,18 +165,14 @@ class CONTENT_EXPORT MediaStreamManager
   void EnsureDeviceMonitorStarted();
 
   // Implements MediaStreamProviderListener.
-  virtual void Opened(MediaStreamType stream_type,
-                      int capture_session_id) override;
-  virtual void Closed(MediaStreamType stream_type,
-                      int capture_session_id) override;
-  virtual void DevicesEnumerated(MediaStreamType stream_type,
-                                 const StreamDeviceInfoArray& devices) override;
-  virtual void Aborted(MediaStreamType stream_type,
-                       int capture_session_id) override;
+  void Opened(MediaStreamType stream_type, int capture_session_id) override;
+  void Closed(MediaStreamType stream_type, int capture_session_id) override;
+  void DevicesEnumerated(MediaStreamType stream_type,
+                         const StreamDeviceInfoArray& devices) override;
+  void Aborted(MediaStreamType stream_type, int capture_session_id) override;
 
   // Implements base::SystemMonitor::DevicesChangedObserver.
-  virtual void OnDevicesChanged(
-      base::SystemMonitor::DeviceType device_type) override;
+  void OnDevicesChanged(base::SystemMonitor::DeviceType device_type) override;
 
   // Called by the tests to specify a fake UI that should be used for next
   // generated stream (or when using --use-fake-ui-for-media-stream).
@@ -195,7 +191,7 @@ class CONTENT_EXPORT MediaStreamManager
   // But for some tests which use TestBrowserThreadBundle, we need to call
   // WillDestroyCurrentMessageLoop explicitly because the notification happens
   // too late. (see http://crbug.com/247525#c14).
-  virtual void WillDestroyCurrentMessageLoop() override;
+  void WillDestroyCurrentMessageLoop() override;
 
   // Sends log messages to the render process hosts whose corresponding render
   // processes are making device requests, to be used by the
@@ -208,8 +204,8 @@ class CONTENT_EXPORT MediaStreamManager
   static void SendMessageToNativeLog(const std::string& message);
 
   // base::PowerObserver overrides.
-  virtual void OnSuspend() override;
-  virtual void OnResume() override;
+  void OnSuspend() override;
+  void OnResume() override;
 
  protected:
   // Used for testing.