Non passive touch end or touch cancel listeners should not block scroll.

third_party/WebKit/Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1253 matching lines @@
     ASSERT(document);
     return eventHandlerCount(*document, EventHandlerRegistry::WheelEventBlocking);
 }
 
 unsigned Internals::scrollEventHandlerCount(Document* document)
 {
     ASSERT(document);
     return eventHandlerCount(*document, EventHandlerRegistry::ScrollEvent);
 }
 
-unsigned Internals::touchEventHandlerCount(Document* document)
+unsigned Internals::touchStartOrMoveEventHandlerCount(Document* document)
 {
     ASSERT(document);
-    return eventHandlerCount(*document, EventHandlerRegistry::TouchEventBlocking);
+    return eventHandlerCount(*document, EventHandlerRegistry::TouchStartOrMoveEventBlocking) + eventHandlerCount(*document, EventHandlerRegistry::TouchStartOrMoveEventPassive);
+}
+
+unsigned Internals::touchEndOrCancelEventHandlerCount(Document* document)
+{
+    ASSERT(document);
+    return eventHandlerCount(*document, EventHandlerRegistry::TouchEndOrCancelEventBlocking) + eventHandlerCount(*document, EventHandlerRegistry::TouchEndOrCancelEventPassive);
 }
 
 static PaintLayer* findLayerForGraphicsLayer(PaintLayer* searchRoot, GraphicsLayer* graphicsLayer, IntSize* layerOffset, String* layerType)
 {
     *layerOffset = IntSize();
     if (searchRoot->hasCompositedLayerMapping() && graphicsLayer == searchRoot->compositedLayerMapping()->mainGraphicsLayer()) {
         // If the |graphicsLayer| sets the scrollingContent layer as its
         // scroll parent, consider it belongs to the scrolling layer and
         // mark the layer type as "scrolling".
         if (!searchRoot->layoutObject()->hasTransformRelatedProperty() && searchRoot->scrollParent() && searchRoot->parent() == searchRoot->scrollParent()) {
@@ skipping 1293 matching lines @@
 }
 
 String Internals::getProgrammaticScrollAnimationState(Node* node) const
 {
     if (ScrollableArea* scrollableArea = scrollableAreaForNode(node))
         return scrollableArea->programmaticScrollAnimator().runStateAsText();
     return String();
 }
 
 } // namespace blink