bug:3452868
1. Now hiding the input controls, which also cancels the input controls
fade-in animation, on every intercept of down since the fade-in
anumation flips a flag used to guide the drawing of the input controls.
Note that we also want the scroll wheel shown on down but the fade-in
anumation is actually hiding it upon completion.
Change-Id: Ib161ed757e537365b21e6913370d264152dca1fe
f66adbe756