Add the pointer type of pen to the synthetic WebMousEvent

content/common/input/synthetic_web_input_event_builders.h

Index: content/common/input/synthetic_web_input_event_builders.h
diff --git a/content/common/input/synthetic_web_input_event_builders.h b/content/common/input/synthetic_web_input_event_builders.h
index 23c8e27ca85000596009d33578345df691fd20df..58620d300291e50ae7e8ace22676459e12439445 100644
--- a/content/common/input/synthetic_web_input_event_builders.h
+++ b/content/common/input/synthetic_web_input_event_builders.h
@@ -20,10 +20,13 @@ namespace content {
 class CONTENT_EXPORT SyntheticWebMouseEventBuilder {
  public:
   static blink::WebMouseEvent Build(blink::WebInputEvent::Type type);
-  static blink::WebMouseEvent Build(blink::WebInputEvent::Type type,
-                                    int window_x,
-                                    int window_y,
-                                    int modifiers);
+  static blink::WebMouseEvent Build(
+      blink::WebInputEvent::Type type,
+      int window_x,
+      int window_y,
+      int modifiers,
+      blink::WebPointerProperties::PointerType pointer_type =
+          blink::WebPointerProperties::PointerType::Mouse);
 };
 
 class CONTENT_EXPORT SyntheticWebMouseWheelEventBuilder {