Merge "Add debug log for set/remove active device." am: cbb4cd1f am:...

Merge "Add debug log for set/remove active device." am: cbb4cd1f am: 1466c82f am: 24c414d9 am: a47b3f1a am: d7cd0e2b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1351257

Change-Id: I66e6f219b8e4ab98a62eea2cd64de027f0810f0f