Change ui::Event::time_stamp from TimeDelta to TimeTicks

ui/events/test/events_test_utils.h

Index: ui/events/test/events_test_utils.h
diff --git a/ui/events/test/events_test_utils.h b/ui/events/test/events_test_utils.h
index 60325b392f483bb071918ac71886bf6aa08f8ded..5261ef93c68c207b74a6878e35a8bb66cddbd59b 100644
--- a/ui/events/test/events_test_utils.h
+++ b/ui/events/test/events_test_utils.h
@@ -19,7 +19,7 @@ class EventTestApi {
   explicit EventTestApi(Event* event);
   virtual ~EventTestApi();
 
-  void set_time_stamp(base::TimeDelta time_stamp) {
+  void set_time_stamp(base::TimeTicks time_stamp) {
     event_->time_stamp_ = time_stamp;
   }