SyntheticMouseEvent 2175 Source/core/dom/Node.cpp         return EventDispatcher::dispatchEvent(this, MouseEventDispatchMediator::create(static_pointer_cast<MouseEvent>(event), MouseEventDispatchMediator::SyntheticMouseEvent));
SyntheticMouseEvent  135 Source/core/events/MouseEvent.h     bool isSyntheticMouseEvent() const { return m_mouseEventType == SyntheticMouseEvent; }