Standardize usage of virtual/override/final specifiers.

ui/views/controls/menu/menu_host_root_view.h

Index: ui/views/controls/menu/menu_host_root_view.h
diff --git a/ui/views/controls/menu/menu_host_root_view.h b/ui/views/controls/menu/menu_host_root_view.h
index f08c8139fe51615f3321b81359e80ee26ef504c5..cdb6b408b864ef3eba8486808fed8560201d6894 100644
--- a/ui/views/controls/menu/menu_host_root_view.h
+++ b/ui/views/controls/menu/menu_host_root_view.h
@@ -25,15 +25,15 @@ class MenuHostRootView : public internal::RootView {
   void ClearSubmenu() { submenu_ = NULL; }
 
   // Overridden from View:
-  virtual bool OnMousePressed(const ui::MouseEvent& event) override;
-  virtual bool OnMouseDragged(const ui::MouseEvent& event) override;
-  virtual void OnMouseReleased(const ui::MouseEvent& event) override;
-  virtual void OnMouseMoved(const ui::MouseEvent& event) override;
-  virtual bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
+  bool OnMousePressed(const ui::MouseEvent& event) override;
+  bool OnMouseDragged(const ui::MouseEvent& event) override;
+  void OnMouseReleased(const ui::MouseEvent& event) override;
+  void OnMouseMoved(const ui::MouseEvent& event) override;
+  bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
 
  private:
   // ui::EventProcessor:
-  virtual void OnEventProcessingFinished(ui::Event* event) override;
+  void OnEventProcessingFinished(ui::Event* event) override;
 
   // Returns the MenuController for this MenuHostRootView.
   MenuController* GetMenuController();