Revert "Revert "Pass in active device to all BluetoothA2dp APIs ..."

Revert submission 10303287-revert-10253996-bt-a2dp-no-null-FQRXACWPIA

Reason for revert: Fixing breakage
Reverted Changes:
I4d9f2f819:Revert "Make sure calls to BluetoothA2dp APIs pass...
I771ca0d57:Revert "Need to now pass in active device instead ...
I76529c7a1:Revert "Pass in active device to all BluetoothA2dp...
I297bda68d:Revert "Require user pass in a non-null BluetoothD...
I525327959:Revert "Pass in active device to all BluetoothA2dp...
I1d8660b11:Revert "Pass in active device to all BluetoothA2dp...

Bug: 147287141
Test: robotests
Merged-In: I5aecfa4b5a8e371b914573ddd080acb98078bfca
Change-Id: I5aecfa4b5a8e371b914573ddd080acb98078bfca