DO NOT MERGE: AudioTrack.write(...,timestamp) CTS test

Added CTS test for AudioTrack.write(ByteBuffer audioData,
                                    int sizeInBytes,
                                    @WriteMode int writeMode,
                                    long timestamp);

Bug: 21281884
Change-Id: I9bc6bb112a7c9517be9dbb62604bb7ba4b764135
(cherry picked from commit c20af2fde6399c1ebbc938c2a85053e2d7037809)
2 files changed