Validate that ui::Event::time_stamp comes from the same clock as TimeTicks::Now

ui/events/win/events_win.cc

Index: ui/events/win/events_win.cc
diff --git a/ui/events/win/events_win.cc b/ui/events/win/events_win.cc
index c30b108168daef94822e496a8331360c3ab90a6e..e061bed4f2e88630f351c79e868fb58565ee65d5 100644
--- a/ui/events/win/events_win.cc
+++ b/ui/events/win/events_win.cc
@@ -224,6 +224,7 @@ base::TimeTicks EventTimeFromNative(const base::NativeEvent& native_event) {
   // |TimeTicks::Now()| for event timestamp instead of the native timestamp to
   // ensure computed input latency and web exposed timestamp is consistent with
   // other components.
+  // It is unnecessary to invoke |ValidateEventTimeClock| here because of above.
   // [1] http://blogs.msdn.com/b/oldnewthing/archive/2014/01/22/10491576.aspx
   return EventTimeForNow();
 }