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

chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm

Index: chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
diff --git a/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm b/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
index 5885b7f1a05cbe015adc717219f78f98bfa55c67..ce653b7d7ec794d39141c54d47bfe169d475a990 100644
--- a/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
@@ -37,21 +37,19 @@ class Observer : public chrome::BrowserListObserver,
     BrowserList::AddObserver(this);
   }
 
-  virtual ~Observer() {
-    BrowserList::RemoveObserver(this);
-  }
+  ~Observer() override { BrowserList::RemoveObserver(this); }
 
   // chrome::BrowserListObserver:
-  virtual void OnBrowserAdded(Browser* browser) override {}
-  virtual void OnBrowserRemoved(Browser* browser) override {
+  void OnBrowserAdded(Browser* browser) override {}
+  void OnBrowserRemoved(Browser* browser) override {
     [controller_ activeBrowserChangedTo:chrome::GetLastActiveBrowser()];
   }
-  virtual void OnBrowserSetLastActive(Browser* browser) override {
+  void OnBrowserSetLastActive(Browser* browser) override {
     [controller_ activeBrowserChangedTo:browser];
   }
 
   // AvatarMenuObserver:
-  virtual void OnAvatarMenuChanged(AvatarMenu* menu) override {
+  void OnAvatarMenuChanged(AvatarMenu* menu) override {
     [controller_ rebuildMenu];
   }