Make sure that the pressure is always 0 for pointerup events

ui/events/x/events_x_utils.cc

Index: ui/events/x/events_x_utils.cc
diff --git a/ui/events/x/events_x_utils.cc b/ui/events/x/events_x_utils.cc
index 3b19c7ab64476fb4a31dde788ccc57f913d73cee..9fdd98f3d7665d86f4ee3075907d8a5afa462514 100644
--- a/ui/events/x/events_x_utils.cc
+++ b/ui/events/x/events_x_utils.cc
@@ -734,6 +734,9 @@ float GetTouchForceFromXEvent(const XEvent& xev) {
   if (!ui::DeviceDataManagerX11::GetInstance()->NormalizeData(
           deviceid, ui::DeviceDataManagerX11::DT_TOUCH_PRESSURE, &force))
     force = 0.0;
+  XIDeviceEvent* event = static_cast<XIDeviceEvent*>(xev.xcookie.data);
+  if (event->evtype == XI_TouchEnd)
+    force = 0.0;
   return force;
 }