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

ui/events/test/events_test_utils_x11.cc

Index: ui/events/test/events_test_utils_x11.cc
diff --git a/ui/events/test/events_test_utils_x11.cc b/ui/events/test/events_test_utils_x11.cc
index f4320db0bbf938d6c210670ce5db2a5caa06a9a7..cb961398aea4c0e3bf468fd207a16492a1683acb 100644
--- a/ui/events/test/events_test_utils_x11.cc
+++ b/ui/events/test/events_test_utils_x11.cc
@@ -294,7 +294,7 @@ void ScopedXI2Event::InitTouchEvent(int deviceid,
   std::vector<Valuator> valuators_with_time = valuators;
   valuators_with_time.push_back(
       Valuator(DeviceDataManagerX11::DT_TOUCH_RAW_TIMESTAMP,
-               (ui::EventTimeForNow()).InMicroseconds()));
+               (ui::EventTimeForNow() - base::TimeTicks()).InMicroseconds()));
   SetUpValuators(valuators_with_time);
 }