Standardize usage of virtual/override/final in content/

content/shell/browser/shell_speech_recognition_manager_delegate.h

Index: content/shell/browser/shell_speech_recognition_manager_delegate.h
diff --git a/content/shell/browser/shell_speech_recognition_manager_delegate.h b/content/shell/browser/shell_speech_recognition_manager_delegate.h
index 680082de5cf1ef57103f4a50f940ac37b1c46e2d..908ca8cfd598c91beee75955d6e99c7514d150af 100644
--- a/content/shell/browser/shell_speech_recognition_manager_delegate.h
+++ b/content/shell/browser/shell_speech_recognition_manager_delegate.h
@@ -19,15 +19,16 @@ class ShellSpeechRecognitionManagerDelegate
     : public SpeechRecognitionManagerDelegate {
  public:
   ShellSpeechRecognitionManagerDelegate() {}
-  virtual ~ShellSpeechRecognitionManagerDelegate() {}
+  ~ShellSpeechRecognitionManagerDelegate() override {}
 
   // SpeechRecognitionManagerDelegate methods.
-  virtual void GetDiagnosticInformation(
-      bool* can_report_metrics, std::string* hardware_info) override {}
-  virtual void CheckRecognitionIsAllowed(int session_id,
+  void GetDiagnosticInformation(bool* can_report_metrics,
+                                std::string* hardware_info) override {}
+  void CheckRecognitionIsAllowed(
+      int session_id,
       base::Callback<void(bool ask_user, bool is_allowed)> callback) override;
-  virtual SpeechRecognitionEventListener* GetEventListener() override;
-  virtual bool FilterProfanities(int render_process_id) override;
+  SpeechRecognitionEventListener* GetEventListener() override;
+  bool FilterProfanities(int render_process_id) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellSpeechRecognitionManagerDelegate);