Merge changes from topic "am-48687fdbae704c9ab0e449cd37acfcdb" into udc-qpr-dev

* changes:
  [automerger skipped] Merge changes I03522897,I938467ca,Ia5871919 into tm-dev am: b2e32466 am: b89cb6bb am: eecf84df -s ours am: f2fdde2b -s ours am: fa2a717c -s ours am: 461130a1 -s ours
  [automerger skipped] Add validation on attr type and size in a2dp_api.cc am: c5bc4c49 am: c750219d am: e3a39b88 -s ours am: 952bc38d -s ours am: c7c40285 -s ours am: b54fb6f7 -s ours
  [automerger skipped] Add tests for the following change am: bd32fb5c am: 7803268a am: 8d5d900f -s ours am: 5e4c98d1 -s ours am: f8d4c84d -s ours am: 01206f0a -s ours