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..fa37616887cec9592fa12b42e0aecdb70c18de07 100644
--- a/ui/events/x/events_x_utils.cc
+++ b/ui/events/x/events_x_utils.cc
@@ -725,6 +725,9 @@ float GetTouchAngleFromXEvent(const XEvent& xev) {
 }
 
 float GetTouchForceFromXEvent(const XEvent& xev) {
+  XIDeviceEvent* event = static_cast<XIDeviceEvent*>(xev.xcookie.data);
+  if (event->evtype == XI_TouchEnd)
+    return 0.0;
   double force = 0.0;
   force = GetTouchParamFromXEvent(
       xev, ui::DeviceDataManagerX11::DT_TOUCH_PRESSURE, 0.0);