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

chrome/browser/ui/cocoa/status_bubble_mac.h

Index: chrome/browser/ui/cocoa/status_bubble_mac.h
diff --git a/chrome/browser/ui/cocoa/status_bubble_mac.h b/chrome/browser/ui/cocoa/status_bubble_mac.h
index 20066e063c1c8f4ac4a08319231062337134b72f..8911eaee30a5d78d260e79906c3464e80bf4de2b 100644
--- a/chrome/browser/ui/cocoa/status_bubble_mac.h
+++ b/chrome/browser/ui/cocoa/status_bubble_mac.h
@@ -33,15 +33,14 @@ class StatusBubbleMac : public StatusBubble {
   };
 
   StatusBubbleMac(NSWindow* parent, id delegate);
-  virtual ~StatusBubbleMac();
+  ~StatusBubbleMac() override;
 
   // StatusBubble implementation.
-  virtual void SetStatus(const base::string16& status) override;
-  virtual void SetURL(const GURL& url, const std::string& languages) override;
-  virtual void Hide() override;
-  virtual void MouseMoved(const gfx::Point& location,
-                          bool left_content) override;
-  virtual void UpdateDownloadShelfVisibility(bool visible) override;
+  void SetStatus(const base::string16& status) override;
+  void SetURL(const GURL& url, const std::string& languages) override;
+  void Hide() override;
+  void MouseMoved(const gfx::Point& location, bool left_content) override;
+  void UpdateDownloadShelfVisibility(bool visible) override;
 
   // Mac-specific method: Update the size and position of the status bubble to
   // match the parent window. Safe to call even when the status bubble does not