Handle callbacks to CollapsibleActionViews that are in an actionLayout.

Also, the onActionViewCollapsed needs to be called before detaching
the action view, so that the action view can dismiss the keyboard properly.

Fixes the Gmail search case where the keyboard doesn't disappear on hitting
the "up" affordance after a search.

Change-Id: I3c2f3f90f0edf6473404e6ceae3fa08866cad736