tree b182c3858fbcb6d4a427a30e335e8adb90699b01
parent 579d20b115d9378e647d194ea50ab79e00493f8e
author Henri Chataing <henrichataing@google.com> 1699983555 +0000
committer Henri Chataing <henrichataing@google.com> 1700000232 +0000

VolumeControlService: Push registerCallback and unregisterCallback to the handler thread

Resolves two issues:
- registerCallback invokes an aconfig flag which _can_
  require READ_DEVICE_CONFIG permission, this prevents
  the caller implicitely requiring the permission
- mCallbacks is not otherwise protected against
  concurrent access from the handler thread

Test: atest CtsBluetoothTestCases
Bug: 307408418
Change-Id: I4fd8e84e44bac8f272bbfff28377473d689a9979