am a0f67594: am 8d5e35ad: am 65b33c92: am 7cc0cda1: am 881cd155: Merge "MidiManager: use ConcurrentHashMap" into mnc-dev

* commit 'a0f6759424d637d5688c5b318f47033ba41e67d6':
  MidiManager: use ConcurrentHashMap