ui: events: Add a class to hold common touch and stylus properties

ash/shelf/shelf_button_pressed_metric_tracker_unittest.cc

Index: ash/shelf/shelf_button_pressed_metric_tracker_unittest.cc
diff --git a/ash/shelf/shelf_button_pressed_metric_tracker_unittest.cc b/ash/shelf/shelf_button_pressed_metric_tracker_unittest.cc
index ba2f3b13a7621c2ae60add769438f51986a8180e..dae071a51fe795f77c528449364fcde7ef48662a 100644
--- a/ash/shelf/shelf_button_pressed_metric_tracker_unittest.cc
+++ b/ash/shelf/shelf_button_pressed_metric_tracker_unittest.cc
@@ -158,8 +158,9 @@ void ShelfButtonPressedMetricTrackerTest::ButtonPressed(
 // a button is pressed by a mouse event.
 TEST_F(ShelfButtonPressedMetricTrackerTest,
        Launcher_ButtonPressed_MouseIsRecordedWhenIconActivatedByMouse) {
-  const ui::MouseEvent mouse_event(ui::ET_MOUSE_PRESSED, gfx::Point(),
-                                   gfx::Point(), base::TimeDelta(), 0, 0);
+  const ui::MouseEvent mouse_event(
+      ui::ET_MOUSE_PRESSED, gfx::Point(), gfx::Point(), base::TimeDelta(), 0, 0,
+      ui::PointerEventDetails(ui::EventPointerType::POINTER_TYPE_MOUSE));
 
   base::UserActionTester user_action_tester;
   ButtonPressed(mouse_event);