| Index: ui/events/x/events_x.cc | 
| diff --git a/ui/events/x/events_x.cc b/ui/events/x/events_x.cc | 
| index 65d90efd722555af42cfc503cbc8ed214433457b..1e84640d76dbd1b0104cb35ea391a43445442adf 100644 | 
| --- a/ui/events/x/events_x.cc | 
| +++ b/ui/events/x/events_x.cc | 
| @@ -85,7 +85,9 @@ int EventFlagsFromNative(const base::NativeEvent& native_event) { | 
| } | 
|  | 
| base::TimeTicks EventTimeFromNative(const base::NativeEvent& native_event) { | 
| -  return EventTimeFromXEvent(*native_event); | 
| +  base::TimeTicks timestamp = EventTimeFromXEvent(*native_event); | 
| +  ValidateEventTimeClock(×tamp); | 
| +  return timestamp; | 
| } | 
|  | 
| gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) { | 
|  |