Provision to start base::SimpleTestTickClock at initial ticks

ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.cc

Index: ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.cc
diff --git a/ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.cc b/ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.cc
index c37185856cd0a51af59f00c09ebfba2b2e9d7aaa..fab778f3b454f3e59ca0027fbcd59a9f068201fa 100644
--- a/ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.cc
+++ b/ui/display/chromeos/x11/native_display_event_dispatcher_x11_unittest.cc
@@ -136,8 +136,8 @@ NativeDisplayEventDispatcherX11Test::NativeDisplayEventDispatcherX11Test()
       helper_delegate_(new TestHelperDelegate()),
       dispatcher_(new NativeDisplayEventDispatcherX11(helper_delegate_.get(),
                                                       xrandr_event_base_)),
-      test_tick_clock_(new base::SimpleTestTickClock) {
-  test_tick_clock_->Advance(base::TimeDelta::FromMilliseconds(1));
+      test_tick_clock_(new base::SimpleTestTickClock(
+          base::TimeTicks() + base::TimeDelta::FromMilliseconds(1))) {
   dispatcher_->SetTickClockForTest(
       scoped_ptr<base::TickClock>(test_tick_clock_));
 }