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 16a0f5e3dbb9b5579be968d836f43fbe6866c6d5..6d53d6d6c3087ecf481282cee3c8b3ed65d6d111 100644
--- a/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
+++ b/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
@@ -130,6 +130,24 @@ int WebMouseEventButtonToFlags(blink::WebMouseEvent::Button button) {
   return 0;
 }
 
+ui::EventPointerType WebPointerTypeToEventPointerType(
+    blink::WebPointerProperties::PointerType type) {
+  switch (type) {
+    case blink::WebPointerProperties::PointerType::Touch:
+      return ui::EventPointerType::POINTER_TYPE_TOUCH;
+    case blink::WebPointerProperties::PointerType::Mouse:
+      return ui::EventPointerType::POINTER_TYPE_MOUSE;
+    case blink::WebPointerProperties::PointerType::Pen:
+      return ui::EventPointerType::POINTER_TYPE_PEN;
+    case blink::WebPointerProperties::PointerType::Eraser:
+      return ui::EventPointerType::POINTER_TYPE_ERASER;
+    case blink::WebPointerProperties::PointerType::Unknown:
+      return ui::EventPointerType::POINTER_TYPE_UNKNOWN;
+  }
+  NOTREACHED() << "Unexpected EventPointerType";
+  return ui::EventPointerType::POINTER_TYPE_UNKNOWN;
+}
+
 }  // namespace
 
 void SyntheticGestureTargetAura::DispatchWebMouseEventToPlatform(
@@ -143,6 +161,10 @@ void SyntheticGestureTargetAura::DispatchWebMouseEventToPlatform(
                        web_mouse.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 =
+      WebPointerTypeToEventPointerType(web_mouse.pointerType);
+  mouse_event.set_pointer_details(pointer_details);
 
   aura::Window* window = GetWindow();
   mouse_event.ConvertLocationToTarget(window, window->GetRootWindow());