Added PointerEvent firing on touch events.

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 54 matching lines @@
 #include "core/editing/htmlediting.h"
 #include "core/editing/markup.h"
 #include "core/events/Event.h"
 #include "core/events/EventDispatchMediator.h"
 #include "core/events/EventDispatcher.h"
 #include "core/events/EventListener.h"
 #include "core/events/GestureEvent.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/events/MouseEvent.h"
 #include "core/events/MutationEvent.h"
+#include "core/events/PointerEvent.h"
 #include "core/events/TextEvent.h"
 #include "core/events/TouchEvent.h"
 #include "core/events/UIEvent.h"
 #include "core/events/WheelEvent.h"
 #include "core/frame/EventHandlerRegistry.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLDialogElement.h"
@@ skipping 2015 matching lines @@
     dispatchScopedEventDispatchMediator(EventDispatchMediator::create(event));
 }
 
 void Node::dispatchScopedEventDispatchMediator(PassRefPtrWillBeRawPtr<EventDispatchMediator> eventDispatchMediator)
 {
     EventDispatcher::dispatchScopedEvent(*this, eventDispatchMediator);
 }
 
 bool Node::dispatchEvent(PassRefPtrWillBeRawPtr<Event> event)
 {
-    if (event->isMouseEvent())
-        return EventDispatcher::dispatchEvent(*this, MouseEventDispatchMediator::create(static_pointer_cast<MouseEvent>(event), MouseEventDispatchMediator::SyntheticMouseEvent));
-    if (event->isTouchEvent())
-        return dispatchTouchEvent(static_pointer_cast<TouchEvent>(event));
+    // For a PointerEvent, MouseEvent or TouchEvent, the 'relatedTarget' property must be updated
+    // during dispatch. This generic dispatcher can't handle this.

[Rick Byers, 2015/06/11 04:14:56]

Doesn't the Javascript EventTarget.dispatchEvent case hit this path?  I'd expect
this to get triggered by at least a few tests.  If I'm right then you probably
do need the original pattern.

[mustaq, 2015/06/12 16:05:23]

Good catch! Back to my first patch here.

+    RELEASE_ASSERT(!event->isPointerEvent() && !event->isMouseEvent() && !event->isTouchEvent());
+
     return EventDispatcher::dispatchEvent(*this, EventDispatchMediator::create(event));
 }
 
 void Node::dispatchSubtreeModifiedEvent()
 {
     if (isInShadowTree())
         return;
 
     ASSERT(!EventDispatchForbiddenScope::isEventDispatchForbidden());
 
@@ skipping 29 matching lines @@
     if (!gestureEvent.get())
         return false;
     return EventDispatcher::dispatchEvent(*this, GestureEventDispatchMediator::create(gestureEvent));
 }
 
 bool Node::dispatchTouchEvent(PassRefPtrWillBeRawPtr<TouchEvent> event)
 {
     return EventDispatcher::dispatchEvent(*this, TouchEventDispatchMediator::create(event));
 }
 
+bool Node::dispatchPointerEvent(PassRefPtrWillBeRawPtr<PointerEvent> event)
+{
+    return EventDispatcher::dispatchEvent(*this, PointerEventDispatchMediator::create(event));
+}
+
 void Node::dispatchSimulatedClick(Event* underlyingEvent, SimulatedClickMouseEventOptions eventOptions)
 {
     EventDispatcher::dispatchSimulatedClick(*this, underlyingEvent, eventOptions);
 }
 
 bool Node::dispatchWheelEvent(const PlatformWheelEvent& event)
 {
     return EventDispatcher::dispatchEvent(*this, WheelEventDispatchMediator::create(event, document().domWindow()));
 }
 
@@ skipping 328 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif