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

content/browser/renderer_host/media/audio_renderer_host.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.
 //
 // AudioRendererHost serves audio related requests from AudioRenderer which
 // lives inside the render process and provide access to audio hardware.
 //
 // This class is owned by BrowserRenderProcessHost, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread, so we
 // need to be extra careful about the lifetime of this object. AudioManager is a
@@ skipping 63 matching lines @@
                     AudioMirroringManager* mirroring_manager,
                     MediaInternals* media_internals,
                     MediaStreamManager* media_stream_manager);
 
   // Calls |callback| with the list of AudioOutputControllers for this object.
   void GetOutputControllers(
       int render_view_id,
       const RenderViewHost::GetAudioOutputControllersCallback& callback) const;
 
   // BrowserMessageFilter implementation.
-  virtual void OnChannelClosing() override;
-  virtual void OnDestruct() const override;
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  void OnChannelClosing() override;
+  void OnDestruct() const override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   // Returns true if any streams managed by this host are actively playing.  Can
   // be called from any thread.
   bool HasActiveAudio();
 
   // Returns true if any streams managed by the RenderView identified by
   // |render_view_id| are actively playing. Can be called from any thread.
   bool RenderViewHasActiveAudio(int render_view_id) const;
 
  private:
   friend class AudioRendererHostTest;
   friend class BrowserThread;
   friend class base::DeleteHelper<AudioRendererHost>;
   friend class MockAudioRendererHost;
   friend class TestAudioRendererHost;
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, CreateMockStream);
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, MockStreamDataConversation);
 
   class AudioEntry;
   typedef std::map<int, AudioEntry*> AudioEntryMap;
 
-  virtual ~AudioRendererHost();
+  ~AudioRendererHost() override;
 
   // Methods called on IO thread ----------------------------------------------
 
   // Audio related IPC message handlers.
 
   // Creates an audio output stream with the specified format whose data is
   // produced by an entity in the render view referenced by |render_view_id|.
   // |session_id| is used for unified IO to find out which input device to be
   // opened for the stream. For clients that do not use unified IO,
   // |session_id| will be ignored.
@@ skipping 61 matching lines @@
 
   // The number of streams in the playing state.
   base::AtomicRefCount num_playing_streams_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_