Active display: Allow apps to be excluded from being displayed [1/2]

This has been a highly requested feature so I guess it's about time
we implement it :).

Change-Id: I5c334833b78325733ae076c07afccebb02758ead
OBEX: Implementation of MAP and PBAP client role on Bluedroid

Implementation changes to support MAP client and PBAP client
role on Bluedroid stack.

Change-Id: Ic75e0bea10b8420aef928d868cc25acd769d5620
CRs-fixed: 530274
Fix various c++11 narrowing violations

Summary:
The best fix for these narrowing
violations is to use static casting

Test Plan: verified

Reviewers: randall.rushing, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D641