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

chrome/browser/ui/autofill/loading_animation.h

Index: chrome/browser/ui/autofill/loading_animation.h
diff --git a/chrome/browser/ui/autofill/loading_animation.h b/chrome/browser/ui/autofill/loading_animation.h
index e306c6196b18dad986cf27b0146bbf4937b6f326..4a1bb21ee575532e2801fedb8c77cd4c5069dbf9 100644
--- a/chrome/browser/ui/autofill/loading_animation.h
+++ b/chrome/browser/ui/autofill/loading_animation.h
@@ -14,10 +14,10 @@ class LoadingAnimation : public gfx::LinearAnimation {
  public:
   explicit LoadingAnimation(gfx::AnimationDelegate* delegate,
                             int font_height);
-  virtual ~LoadingAnimation();
+  ~LoadingAnimation() override;
 
   // gfx::Animation implementation.
-  virtual void Step(base::TimeTicks time_now) override;
+  void Step(base::TimeTicks time_now) override;
 
   // Returns the vertical pixel offset for the nth dot.
   double GetCurrentValueForDot(size_t dot_i) const;