The additional force event added in -[HIDEventGenerator _createIOHIDEventType:eventType] causes us to crash and is redundant (see Radar for details).
Created attachment 264717 [details]
Comment on attachment 264717 [details]
Clearing flags on attachment: 264717
Committed r191974: <http://trac.webkit.org/changeset/191974>
All reviewed patches have been landed. Closing bug.