1. The purpose of the View#announceForAccessibility method is to
give a message to the user that is not related to a predefined
view state change. The current implementation is grabbing the
source view's content description which in general overrides
the event text which defeats the purpose of the announcement.
bug:6721440
Change-Id: I8814914bea38c5f4c04f57391a64cf2bb06cb975
7a82b2be06