Cache audio attributes when player not available

Cache the audio attributes stored in a Parcel in the client-side
 MediaPlayer object if they are set through setParameter()
 before the server-side MediaPlayer is available. Apply them when
 the player is prepared.

Bug 17280746

Change-Id: I72f1a7fc4e2b076fae8cbdede77a2f74e98b2a03
2 files changed