A2DP switch device refactor

Bluetooth mainline effort to reduce AudioManager API

Test: Manual
Tag: #refactor
Bug: 190422401
Fix: 197715842
Fix: 197932292
Merged-In: I65c6561969d443e80f0a49256770279cd0959352
Change-Id: I65c6561969d443e80f0a49256770279cd0959352
10 files changed