Added PointerEvent firing on touch events.

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index d6a648772a8c29a04822de6ac13616bf02be98d8..a94d3b402a41da0cb456ab64c4ce42445ce5f308 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -72,6 +72,7 @@
 #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"
@@ -2111,10 +2112,6 @@ void Node::dispatchScopedEventDispatchMediator(PassRefPtrWillBeRawPtr<EventDispa
 
 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));

[Rick Byers, 2015/05/27 23:58:07]

I agree with hayato that we should at least ASSERT (probably better to
RELEASE_ASSERT) here that we're not given touch/mouse/pointer to ensure no new
calls don't get added accidentally.  Alternately I'm fine keeping the existing
code now that we understand it (although delegating to the dispatchMouseEvent
method is probably better than repeating the logic).  Up to you.

Also add a commenting saying "these event types have a 'relatedTarget' property
which must be updated during dispatch.  

[mustaq, 2015/06/09 15:31:27]

Done.

     return EventDispatcher::dispatchEvent(*this, EventDispatchMediator::create(event));
 }
 
@@ -2164,6 +2161,11 @@ 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);