Add support for audio mix creation by UID. Refactor AudioAttributes-based mix criteria to a generic Object interface. Bug 26798796 Change-Id: Idac256e19019cd1be52168c6127997c3c1bf280e
Add support for audio mix creation by UID. Refactor AudioAttributes-based mix criteria to a generic Object interface. Bug 26798796 Change-Id: Idac256e19019cd1be52168c6127997c3c1bf280e