resolved conflicts for 3b8747ca to lmp-mr1-ub-dev

Merge commit '3b8747ca601175da0c94537e49f3097769a09501' into HEAD

libstagefright: sanity check size before dereferencing pointer in Utils.cpp

Also remove some CHECK's.

Bug: 23680780
(cherry picked from commit 7bb772e0c643ff3292599cf485b9dbf232bf39a4)

Change-Id: I5b919716178eb3ba844b21e497b792e6ac61554d