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

ui/events/blink/blink_event_util_unittest.cc

Index: ui/events/blink/blink_event_util_unittest.cc
diff --git a/ui/events/blink/blink_event_util_unittest.cc b/ui/events/blink/blink_event_util_unittest.cc
index cb0830caabe918412f64879b4b5c1bccd883d1e1..cbc536ffed1dcc3c59d772dd6a1d6112b7dc407b 100644
--- a/ui/events/blink/blink_event_util_unittest.cc
+++ b/ui/events/blink/blink_event_util_unittest.cc
@@ -19,7 +19,7 @@ TEST(BlinkEventUtilTest, NoScalingWith1DSF) {
                                         1);
   auto event =
       CreateWebGestureEvent(details,
-                            base::TimeDelta::FromMilliseconds(1),
+                            base::TimeTicks(),
                             gfx::PointF(1.f, 1.f),
                             gfx::PointF(1.f, 1.f),
                             0);