Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/ui.

chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.h

Index: chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.h
diff --git a/chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.h b/chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.h
index a1f5554621e16f6ec9c4e527b74ddecf1d6ca141..6f90943bbcbf8d283d717c3796331664765f626a 100644
--- a/chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.h
+++ b/chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.h
@@ -15,11 +15,10 @@ class ScreenCaptureNotificationUIChromeOS : public ScreenCaptureNotificationUI {
  public:
   // |text| is used to specify the text for the notification.
   explicit ScreenCaptureNotificationUIChromeOS(const base::string16& text);
-  virtual ~ScreenCaptureNotificationUIChromeOS();
+  ~ScreenCaptureNotificationUIChromeOS() override;
 
   // ScreenCaptureNotificationUI overrides.
-  virtual gfx::NativeViewId OnStarted(const base::Closure& stop_callback)
-      override;
+  gfx::NativeViewId OnStarted(const base::Closure& stop_callback) override;
 
  private:
   const base::string16 text_;