[automerger skipped] Merge "AudioTrack: get/setStartThresholdInFrames" am: 64e333a250 am: b84823ab48 am: fdb2c46585 -s ours

am skip reason: skip tag Change-Id I5064d04961e48b530c49071ff84c2e0d2065f41b with SHA-1 1c34209969 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1644446

Change-Id: I24e5198323195b810b229a6a90c0220411dc2dd4