Standardize usage of virtual/override/final specifiers.

ui/views/test/capture_tracking_view.h

Index: ui/views/test/capture_tracking_view.h
diff --git a/ui/views/test/capture_tracking_view.h b/ui/views/test/capture_tracking_view.h
index a80cab064dbe3f5bf99320fe59016dfc574d7292..acbc30561e6dbc95b8d88eb6d97ee27b76a56e1a 100644
--- a/ui/views/test/capture_tracking_view.h
+++ b/ui/views/test/capture_tracking_view.h
@@ -15,7 +15,7 @@ namespace test {
 class CaptureTrackingView : public views::View {
  public:
   CaptureTrackingView();
-  virtual ~CaptureTrackingView();
+  ~CaptureTrackingView() override;
 
   // Returns true if OnMousePressed() has been invoked.
   bool got_press() const { return got_press_; }
@@ -26,8 +26,8 @@ class CaptureTrackingView : public views::View {
   void reset() { got_press_ = got_capture_lost_ = false; }
 
   // Overridden from views::View
-  virtual bool OnMousePressed(const ui::MouseEvent& event) override;
-  virtual void OnMouseCaptureLost() override;
+  bool OnMousePressed(const ui::MouseEvent& event) override;
+  void OnMouseCaptureLost() override;
 
  private:
   // See description above getters.