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

ui/events/events_stub.cc

Index: ui/events/events_stub.cc
diff --git a/ui/events/events_stub.cc b/ui/events/events_stub.cc
index d066872f2eb9df055b8ee78431aabdf5356e9a74..c1ecd9f14c6f8f432ff1ed438fd2573f479f4859 100644
--- a/ui/events/events_stub.cc
+++ b/ui/events/events_stub.cc
@@ -27,9 +27,9 @@ int EventFlagsFromNative(const base::NativeEvent& native_event) {
   return 0;
 }
 
-base::TimeDelta EventTimeFromNative(const base::NativeEvent& native_event) {
+base::TimeTicks EventTimeFromNative(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
-  return base::TimeDelta();
+  return base::TimeTicks();
 }
 
 gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) {