Merge "Add debug log for set/remove active device." am: cbb4cd1f8c am: 1466c82f13 am: 24c414d9e5

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

Change-Id: I4582f65c5674a549ad7ffbc9e12c70b80258d0de