This reduces the amount of time available to the user to cancel
launching the camera in order to improve average launch time.
It also increases the threshhold for flings and motions to prevent
unintentional launches which are costly in terms of falsing.
Fixes bug b/11657355
Change-Id: I852abbe3ce8ddddcb65f3a48a2f8111d20126189
aa89847f4e