am e3c4ef80: am 24dce607: DO NOT MERGE: Add status callback for start/stop...
am e3c4ef80: am 24dce607: DO NOT MERGE: Add status callback for start/stop advertising. cherrypick from master to fix b/13289050
* commit 'e3c4ef80':
DO NOT MERGE: Add status callback for start/stop advertising. cherrypick from master to fix b/13289050