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

Source/core/events/MouseEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 199 matching lines @@
     return target() ? target()->toNode() : 0;
 }
 
 DEFINE_TRACE(MouseEvent)
 {
     visitor->trace(m_relatedTarget);
     visitor->trace(m_dataTransfer);
     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();
         m_shiftKey = keyStateEvent->shiftKey();
         m_metaKey = keyStateEvent->metaKey();
     }
     setUnderlyingEvent(underlyingEvent);
 
     if (this->underlyingEvent() && this->underlyingEvent()->isMouseEvent()) {
         MouseEvent* mouseEvent = toMouseEvent(this->underlyingEvent());
@@ skipping 64 matching lines @@
     doubleClickEvent->setTrusted(event().isTrusted());
     if (event().defaultHandled())
         doubleClickEvent->setDefaultHandled();
     EventDispatcher::dispatchEvent(dispatcher.node(), MouseEventDispatchMediator::create(doubleClickEvent));
     if (doubleClickEvent->defaultHandled() || doubleClickEvent->defaultPrevented())
         return false;
     return !swallowEvent;
 }
 
 } // namespace blink