Add the pointer type of pen to the synthetic WebMousEvent

content/common/input/synthetic_web_input_event_builders.cc

Index: content/common/input/synthetic_web_input_event_builders.cc
diff --git a/content/common/input/synthetic_web_input_event_builders.cc b/content/common/input/synthetic_web_input_event_builders.cc
index e7c5f6da90adde6b5751b78181bea1a49e857603..f168dceba1e45486a4c22856b513ff7b78d1dccc 100644
--- a/content/common/input/synthetic_web_input_event_builders.cc
+++ b/content/common/input/synthetic_web_input_event_builders.cc
@@ -29,8 +29,11 @@ WebMouseEvent SyntheticWebMouseEventBuilder::Build(
     blink::WebInputEvent::Type type,
     int window_x,
     int window_y,
-    int modifiers) {
+    int modifiers,
+    blink::WebPointerProperties::PointerType pointer_type) {
   DCHECK(WebInputEvent::isMouseEventType(type));
+  DCHECK(pointer_type == blink::WebPointerProperties::PointerType::Mouse ||
+         pointer_type == blink::WebPointerProperties::PointerType::Pen);
   WebMouseEvent result(type, modifiers,
                        ui::EventTimeStampToSeconds(ui::EventTimeForNow()));
   result.x = window_x;
@@ -38,7 +41,7 @@ WebMouseEvent SyntheticWebMouseEventBuilder::Build(
   result.windowX = window_x;
   result.windowY = window_y;
   result.setModifiers(modifiers);
-  result.pointerType = blink::WebPointerProperties::PointerType::Mouse;
+  result.pointerType = pointer_type;
   return result;
 }