Standardize usage of virtual/override/final in chrome/browser/speech

chrome/browser/speech/tts_controller_impl.h

Index: chrome/browser/speech/tts_controller_impl.h
diff --git a/chrome/browser/speech/tts_controller_impl.h b/chrome/browser/speech/tts_controller_impl.h
index 267fbf3d7d2f12b0e62d0d82f20012e4973943d6..2192cf031cb55c7b337c7d6845085678ea5cd56c 100644
--- a/chrome/browser/speech/tts_controller_impl.h
+++ b/chrome/browser/speech/tts_controller_impl.h
@@ -29,30 +29,28 @@ class TtsControllerImpl : public TtsController {
   static TtsControllerImpl* GetInstance();
 
   // TtsController methods
-  virtual bool IsSpeaking() override;
-  virtual void SpeakOrEnqueue(Utterance* utterance) override;
-  virtual void Stop() override;
-  virtual void Pause() override;
-  virtual void Resume() override;
-  virtual void OnTtsEvent(int utterance_id,
+  bool IsSpeaking() override;
+  void SpeakOrEnqueue(Utterance* utterance) override;
+  void Stop() override;
+  void Pause() override;
+  void Resume() override;
+  void OnTtsEvent(int utterance_id,
                   TtsEventType event_type,
                   int char_index,
                   const std::string& error_message) override;
-  virtual void GetVoices(content::BrowserContext* browser_context,
-                         std::vector<VoiceData>* out_voices) override;
-  virtual void VoicesChanged() override;
-  virtual void AddVoicesChangedDelegate(
-      VoicesChangedDelegate* delegate) override;
-  virtual void RemoveVoicesChangedDelegate(
-      VoicesChangedDelegate* delegate) override;
-  virtual void SetTtsEngineDelegate(TtsEngineDelegate* delegate) override;
-  virtual TtsEngineDelegate* GetTtsEngineDelegate() override;
-  virtual void SetPlatformImpl(TtsPlatformImpl* platform_impl) override;
-  virtual int QueueSize() override;
+  void GetVoices(content::BrowserContext* browser_context,
+                 std::vector<VoiceData>* out_voices) override;
+  void VoicesChanged() override;
+  void AddVoicesChangedDelegate(VoicesChangedDelegate* delegate) override;
+  void RemoveVoicesChangedDelegate(VoicesChangedDelegate* delegate) override;
+  void SetTtsEngineDelegate(TtsEngineDelegate* delegate) override;
+  TtsEngineDelegate* GetTtsEngineDelegate() override;
+  void SetPlatformImpl(TtsPlatformImpl* platform_impl) override;
+  int QueueSize() override;
 
  protected:
   TtsControllerImpl();
-  virtual ~TtsControllerImpl();
+  ~TtsControllerImpl() override;
 
  private:
   // Get the platform TTS implementation (or injected mock).