GitLab

In classes.h: we should only have to include the headers
 for the objects that are actually stored as member variables of
 the OpenSL ES and OpenMAX AL objects (so here AudioTrackProtector,
 Effect, and GenericPlayer).
In CMediaPlayer.c: remove useless includes and change the video
 surface function prototypes to use const refs to strong pointers
 instead of pointers to access the GenericMediaPlayer objects.

Note that android_SfPlayer.h is still in sles_allinclusive.h because
 it will be dealt with when the SfPlayer functionality is absorbed
 under LocAVPlayer.

Change-Id: Ic2c9459862588399d9545a247cc15341effc0f66