isTrusted is incorrect for events generated by Element.click()

Source/core/events/MouseEvent.cpp

Index: Source/core/events/MouseEvent.cpp
diff --git a/Source/core/events/MouseEvent.cpp b/Source/core/events/MouseEvent.cpp
index 9466eb8a49d9b992a4a9c5307610b4e9b31d9082..1d9aa4ab0440ace1e537af636aabb59b48513a46 100644
--- a/Source/core/events/MouseEvent.cpp
+++ b/Source/core/events/MouseEvent.cpp
@@ -217,20 +217,20 @@ DEFINE_TRACE(MouseEvent)
     MouseRelatedEvent::trace(visitor);
 }
 
-PassRefPtrWillBeRawPtr<SimulatedMouseEvent> SimulatedMouseEvent::create(const AtomicString& eventType, PassRefPtrWillBeRawPtr<AbstractView> view, PassRefPtrWillBeRawPtr<Event> underlyingEvent)
+PassRefPtrWillBeRawPtr<SimulatedMouseEvent> SimulatedMouseEvent::create(const AtomicString& eventType, PassRefPtrWillBeRawPtr<AbstractView> view, PassRefPtrWillBeRawPtr<Event> underlyingEvent, SimulatedClickCreationScope creationScope)
 {
-    return adoptRefWillBeNoop(new SimulatedMouseEvent(eventType, view, underlyingEvent));
+    return adoptRefWillBeNoop(new SimulatedMouseEvent(eventType, view, underlyingEvent, creationScope));
 }
 
 SimulatedMouseEvent::~SimulatedMouseEvent()
 {
 }
 
-SimulatedMouseEvent::SimulatedMouseEvent(const AtomicString& eventType, PassRefPtrWillBeRawPtr<AbstractView> view, PassRefPtrWillBeRawPtr<Event> underlyingEvent)
+SimulatedMouseEvent::SimulatedMouseEvent(const AtomicString& eventType, PassRefPtrWillBeRawPtr<AbstractView> view, PassRefPtrWillBeRawPtr<Event> underlyingEvent, SimulatedClickCreationScope creationScope)
     : MouseEvent(eventType, true, true, view, 0, 0, 0, 0, 0, 0, 0, false, false, false, false, 0, 0,
         nullptr, nullptr, true, PlatformMouseEvent::RealOrIndistinguishable)
 {
-    setTrusted(true);
+    setTrusted(creationScope == SimulatedClickCreationScope::FromUserAgent);
     if (UIEventWithKeyState* keyStateEvent = findEventWithKeyState(underlyingEvent.get())) {
         m_ctrlKey = keyStateEvent->ctrlKey();
         m_altKey = keyStateEvent->altKey();