Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/views/global_error_bubble_view.h

Index: chrome/browser/ui/views/global_error_bubble_view.h
diff --git a/chrome/browser/ui/views/global_error_bubble_view.h b/chrome/browser/ui/views/global_error_bubble_view.h
index ca7d532a3581bd2332430faa7e1070f6d841bc01..ffe097db839c2bf62011a9fbb2129f56177cdb75 100644
--- a/chrome/browser/ui/views/global_error_bubble_view.h
+++ b/chrome/browser/ui/views/global_error_bubble_view.h
@@ -22,17 +22,16 @@ class GlobalErrorBubbleView : public views::ButtonListener,
       views::BubbleBorder::Arrow arrow,
       Browser* browser,
       const base::WeakPtr<GlobalErrorWithStandardBubble>& error);
-  virtual ~GlobalErrorBubbleView();
+  ~GlobalErrorBubbleView() override;
 
   // views::ButtonListener implementation.
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) override;
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   // views::WidgetDelegate implementation.
-  virtual void WindowClosing() override;
+  void WindowClosing() override;
 
   // GlobalErrorBubbleViewBase implementation.
-  virtual void CloseBubbleView() override;
+  void CloseBubbleView() override;
 
  private:
   Browser* browser_;