Standardize usage of virtual/override/final in content/browser/

content/browser/renderer_host/input/synthetic_tap_gesture.h

Index: content/browser/renderer_host/input/synthetic_tap_gesture.h
diff --git a/content/browser/renderer_host/input/synthetic_tap_gesture.h b/content/browser/renderer_host/input/synthetic_tap_gesture.h
index b73f8617c5d4160f360719918145f9caa4143145..a42b2dd17edf12fbe005d25c51ce992be97e9678 100644
--- a/content/browser/renderer_host/input/synthetic_tap_gesture.h
+++ b/content/browser/renderer_host/input/synthetic_tap_gesture.h
@@ -16,9 +16,9 @@ namespace content {
 class CONTENT_EXPORT SyntheticTapGesture : public SyntheticGesture {
  public:
   explicit SyntheticTapGesture(const SyntheticTapGestureParams& params);
-  virtual ~SyntheticTapGesture();
+  ~SyntheticTapGesture() override;
 
-  virtual SyntheticGesture::Result ForwardInputEvents(
+  SyntheticGesture::Result ForwardInputEvents(
       const base::TimeTicks& timestamp,
       SyntheticGestureTarget* target) override;