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

[automerger skipped] Merge "Changing BluetoothHeadset APIs from @hide to @SystemApi" am: 8111b5cf -s ours am: bac3f7f5 -s ours am: 22886ed5 -s ours am: 78fd4db1 -s ours

am skip reason: Merged-In I02b2e7e5e0be3b462f7c25b655e669e2c7fe47eb with SHA-1 ffab9955 is already in history

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

Change-Id: I91e874774e28bfcac95ca1988462df654633142e