Add the pointer type of pen to the synthetic WebMousEvent

content/browser/renderer_host/input/synthetic_gesture_target_aura.cc

Index: content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
diff --git a/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc b/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
index d08f69069270a214356c1b253ec036c5f1c0e857..38ff88081c216fc6179b9e6941292ca63f755ae7 100644
--- a/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
+++ b/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
@@ -125,19 +125,34 @@ int WebEventModifiersToEventFlags(int modifiers) {
   return flags;
 }
 
+ui::EventPointerType WebMousePointerTypeToEventPointerType(
+    blink::WebPointerProperties::PointerType type) {
+    if (type == blink::WebPointerProperties::PointerType::Mouse)
+      return ui::EventPointerType::POINTER_TYPE_MOUSE;
+    if (type == blink::WebPointerProperties::PointerType::Pen)
+      return ui::EventPointerType::POINTER_TYPE_PEN;
+    NOTREACHED() << "Unexpected mouse event pointer type";
+    return ui::EventPointerType::POINTER_TYPE_UNKNOWN;
+}
+
 }  // namespace
 
 void SyntheticGestureTargetAura::DispatchWebMouseEventToPlatform(
-      const blink::WebMouseEvent& web_mouse,
-      const ui::LatencyInfo& latency_info) {
-  ui::EventType event_type = WebMouseEventTypeToEventType(web_mouse.type());
-  int flags = WebEventModifiersToEventFlags(web_mouse.modifiers());
+    const blink::WebMouseEvent& web_mouse_event,
+    const ui::LatencyInfo& latency_info) {
+  ui::EventType event_type =
+      WebMouseEventTypeToEventType(web_mouse_event.type());
+  int flags = WebEventModifiersToEventFlags(web_mouse_event.modifiers());
   ui::MouseEvent mouse_event(event_type, gfx::Point(), gfx::Point(),
                              ui::EventTimeForNow(), flags, flags);
-  gfx::PointF location(web_mouse.x * device_scale_factor_,
-                       web_mouse.y * device_scale_factor_);
+  gfx::PointF location(web_mouse_event.x * device_scale_factor_,
+                       web_mouse_event.y * device_scale_factor_);
   mouse_event.set_location_f(location);
   mouse_event.set_root_location_f(location);
+  ui::PointerDetails pointer_details = mouse_event.pointer_details();
+  pointer_details.pointer_type =
+      WebMousePointerTypeToEventPointerType(web_mouse_event.pointerType);
+  mouse_event.set_pointer_details(pointer_details);
 
   aura::Window* window = GetWindow();
   mouse_event.ConvertLocationToTarget(window, window->GetRootWindow());