ozone: evdev: Allow setting slot values in EventDeviceInfo

ui/events/ozone/evdev/touch_event_converter_evdev.cc

Index: ui/events/ozone/evdev/touch_event_converter_evdev.cc
diff --git a/ui/events/ozone/evdev/touch_event_converter_evdev.cc b/ui/events/ozone/evdev/touch_event_converter_evdev.cc
index fe734bc7861a92cbb35b7c5e4093e0dccdb8c38d..221e6bf72cca3a008bea9105d431249ce826390f 100644
--- a/ui/events/ozone/evdev/touch_event_converter_evdev.cc
+++ b/ui/events/ozone/evdev/touch_event_converter_evdev.cc
@@ -110,14 +110,19 @@ void TouchEventConverterEvdev::Initialize(const EventDeviceInfo& info) {
 
   events_.resize(touch_points_);
   for (size_t i = 0; i < events_.size(); ++i) {
-    events_[i].x = info.GetSlotValue(ABS_MT_POSITION_X, i);
-    events_[i].y = info.GetSlotValue(ABS_MT_POSITION_Y, i);
-    events_[i].tracking_id = info.GetSlotValue(ABS_MT_TRACKING_ID, i);
+    events_[i].x = info.GetAbsMtSlotValue(ABS_MT_POSITION_X, i);
+    events_[i].y = info.GetAbsMtSlotValue(ABS_MT_POSITION_Y, i);
+    events_[i].tracking_id = info.GetAbsMtSlotValue(ABS_MT_TRACKING_ID, i);
     events_[i].touching = (events_[i].tracking_id >= 0);
     events_[i].slot = i;
-    events_[i].radius_x = info.GetSlotValue(ABS_MT_TOUCH_MAJOR, i);
-    events_[i].radius_y = info.GetSlotValue(ABS_MT_TOUCH_MINOR, i);
-    events_[i].pressure = info.GetSlotValue(ABS_MT_PRESSURE, i);
+
+    // Optional bits.
+    events_[i].radius_x =
+        info.GetAbsMtSlotValueWithDefault(ABS_MT_TOUCH_MAJOR, i, 0);
+    events_[i].radius_y =
+        info.GetAbsMtSlotValueWithDefault(ABS_MT_TOUCH_MINOR, i, 0);
+    events_[i].pressure =
+        info.GetAbsMtSlotValueWithDefault(ABS_MT_PRESSURE, i, 0);
   }
 }