Set Event.composed flag correctly for some of UA UIEvents

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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 56 matching lines @@
         SELECT              = 16384,
         CHANGE              = 32768
     };
 
     enum RailsMode {
         RailsModeFree       = 0,
         RailsModeHorizontal = 1,
         RailsModeVertical   = 2
     };
 
+    enum class ComposedMode {
+        Composed,
+        Scoped,
+    };
+
     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)
     {
@@ skipping 121 matching lines @@
 
     bool isTrusted() const { return m_isTrusted; }
     void setTrusted(bool value) { m_isTrusted = value; }
 
     void setHandlingPassive(bool value) { m_handlingPassive = value; }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     Event();
+    Event(const AtomicString& type, bool canBubble, bool cancelable, ComposedMode, double platformTimeStamp);
     Event(const AtomicString& type, bool canBubble, bool cancelable, double platformTimeStamp);
+    Event(const AtomicString& type, bool canBubble, bool cancelable, ComposedMode);

[kochi, 2016/06/03 08:45:57]

How about adding the default value for the last argument and
merge with the following line?

i.e.
Event(const AtomicString& type, bool canBubble, bool cancelable, ComposedMode =
ComposedMode::Scoped);

[hayato, 2016/06/03 09:03:05]

Done

     Event(const AtomicString& type, bool canBubble, bool cancelable);
     Event(const AtomicString& type, const EventInit&);
 
     virtual void receivedTarget();
 
     void setCanBubble(bool bubble) { m_canBubble = bubble; }
 
 private:
-    Event(const AtomicString& type, bool canBubble, bool cancelable, bool composed, double platformTimeStamp);
 
     enum EventPathMode {
         EmptyAfterDispatch,
         NonEmptyAfterDispatch
     };
 
     HeapVector<Member<EventTarget>> pathInternal(ScriptState*, EventPathMode) const;
 
     AtomicString m_type;
     unsigned m_canBubble:1;
@@ skipping 20 matching lines @@
     // WebInputEvent instance.
     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