[automerger skipped] Merge "Changing BluetoothHeadset APIs from @hide to...

[automerger skipped] Merge "Changing BluetoothHeadset APIs from @hide to @SystemApi" am: 2ef5e10f -s ours am: f46dea86 -s ours am: d25abeab -s ours am: b78a0484 -s ours am: b33da445 -s ours

am skip reason: Merged-In I02b2e7e5e0be3b462f7c25b655e669e2c7fe47eb with SHA-1 ce1d2e1f is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1804490

Change-Id: I4cb40c1a4637821e632d0b3e79833484f72f007d