Add use counter when touch-action isn't used when preventDefault'd.

third_party/WebKit/Source/core/events/Event.h

 /*
  * 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, 2004, 2005, 2006, 2007, 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
@@ skipping 66 matching lines @@
     RailsModeHorizontal = 1,
     RailsModeVertical = 2
   };
 
   enum class ComposedMode {
     Composed,
     Scoped,
   };
 
   enum class PassiveMode {
+    NotPassiveDefault,

[Rick Byers, 2016/11/07 17:01:09]

nit: add comments making the difference between these values precise

[dtapuska, 2016/11/07 18:51:40]

Done.

     NotPassive,
     Passive,
     PassiveForcedDocumentLevel,
+    PassiveDefault,
   };
 
   static Event* create() { return new Event; }
 
   // A factory for a simple event. The event doesn't bubble, and isn't
   // cancelable.
   // http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#fire-a-simple-event
   static Event* create(const AtomicString& type) {
     return new Event(type, false, false);
   }
@@ skipping 206 matching lines @@
   double m_platformTimeStamp;
 };
 
 #define DEFINE_EVENT_TYPE_CASTS(typeName)                          \
   DEFINE_TYPE_CASTS(typeName, Event, event, event->is##typeName(), \
                     event.is##typeName())
 
 }  // namespace blink
 
 #endif  // Event_h