Allow touch events to be uncancelable

Source/core/events/TouchEvent.cpp

 /*
  * Copyright 2008, The Android Open Source Project
  * Copyright (C) 2012 Research In Motion Limited. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
@@ skipping 22 matching lines @@
 namespace WebCore {
 
 TouchEvent::TouchEvent()
 {
     ScriptWrappable::init(this);
 }
 
 TouchEvent::TouchEvent(TouchList* touches, TouchList* targetTouches,
         TouchList* changedTouches, const AtomicString& type,
         PassRefPtrWillBeRawPtr<AbstractView> view, int screenX, int screenY, int pageX, int pageY,
-        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
-    : MouseRelatedEvent(type, true, true, view, 0, IntPoint(screenX, screenY),
+        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool cancelable)
+    : MouseRelatedEvent(type, true, cancelable, view, 0, IntPoint(screenX, screenY),
                         IntPoint(pageX, pageY),
                         IntPoint(0, 0),
                         ctrlKey, altKey, shiftKey, metaKey)
     , m_touches(touches)
     , m_targetTouches(targetTouches)
     , m_changedTouches(changedTouches)
 {
     ScriptWrappable::init(this);
 }
 
 TouchEvent::~TouchEvent()
 {
 }
 
 void TouchEvent::initTouchEvent(TouchList* touches, TouchList* targetTouches,
         TouchList* changedTouches, const AtomicString& type,
         PassRefPtrWillBeRawPtr<AbstractView> view, int screenX, int screenY, int clientX, int clientY,
         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
 {
     if (dispatched())
         return;
 
-    initUIEvent(type, true, true, view, 0);
+    bool cancelable = true;
+    if (type == EventTypeNames::touchcancel)
+        cancelable = false;
+
+    initUIEvent(type, true, cancelable, view, 0);
 
     m_touches = touches;
     m_targetTouches = targetTouches;
     m_changedTouches = changedTouches;
     m_screenLocation = IntPoint(screenX, screenY);
     m_ctrlKey = ctrlKey;
     m_altKey = altKey;
     m_shiftKey = shiftKey;
     m_metaKey = metaKey;
     initCoordinates(IntPoint(clientX, clientY));
@@ skipping 32 matching lines @@
     return toTouchEvent(EventDispatchMediator::event());
 }
 
 bool TouchEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
 {
     event()->eventPath().adjustForTouchEvent(dispatcher->node(), *event());
     return dispatcher->dispatch();
 }
 
 } // namespace WebCore