Add POINTER_TYPE_ERASER to EventPointerType

ui/events/ozone/evdev/tablet_event_converter_evdev.cc

Index: ui/events/ozone/evdev/tablet_event_converter_evdev.cc
diff --git a/ui/events/ozone/evdev/tablet_event_converter_evdev.cc b/ui/events/ozone/evdev/tablet_event_converter_evdev.cc
index 2ba5a7e2d4b90420969208cb071405d7ea5c8dd4..869520f2f276f934fff486ac65886103fbf7eeb3 100644
--- a/ui/events/ozone/evdev/tablet_event_converter_evdev.cc
+++ b/ui/events/ozone/evdev/tablet_event_converter_evdev.cc
@@ -22,6 +22,12 @@ float ScaleTilt(int value, int min_value, int num_values) {
   return 180.f * (value - min_value) / num_values - 90.f;
 }
 
+EventPointerType GetToolType(int button_tool) {
+  if (button_tool == BTN_TOOL_RUBBER)
+    return EventPointerType::POINTER_TYPE_ERASER;
+  return EventPointerType::POINTER_TYPE_PEN;
+}
+
 }  // namespace
 
 TabletEventConverterEvdev::TabletEventConverterEvdev(
@@ -180,7 +186,7 @@ void TabletEventConverterEvdev::DispatchMouseButton(const input_event& input) {
   dispatcher_->DispatchMouseButtonEvent(MouseButtonEventParams(
       input_device_.id, EF_NONE, cursor_->GetLocation(), button, down,
       false /* allow_remap */,
-      PointerDetails(EventPointerType::POINTER_TYPE_PEN,
+      PointerDetails(GetToolType(stylus_),
                      /* radius_x */ 0.0f, /* radius_y */ 0.0f, pressure_,
                      tilt_x_, tilt_y_),
       TimeTicksFromInputEvent(input)));
@@ -203,7 +209,7 @@ void TabletEventConverterEvdev::FlushEvents(const input_event& input) {
 
   dispatcher_->DispatchMouseMoveEvent(MouseMoveEventParams(
       input_device_.id, EF_NONE, cursor_->GetLocation(),
-      PointerDetails(EventPointerType::POINTER_TYPE_PEN,
+      PointerDetails(GetToolType(stylus_),
                      /* radius_x */ 0.0f, /* radius_y */ 0.0f, pressure_,
                      tilt_x_, tilt_y_),
       TimeTicksFromInputEvent(input)));