frameworks/base: Handle Out of Memory Exception when creating video thumbnails.

Adds code to handle an out of memory exception when generating the thumbnail
from a recently recorded video clip.

Change-Id: Ifcbe007272ffef85744fca1414ea5eacccd0154c
CRs-Fixed: 277571
Signed-off-by: Shalaj Jain <shalajj@codeaurora.org>