am 76afc004: Integrate sdk.atree changes from master. DO NOT MERGE

Merge commit '76afc004df452384cfd00137a59c7a3e0502ff75' into gingerbread-plus-aosp

* commit '76afc004df452384cfd00137a59c7a3e0502ff75':
  Integrate sdk.atree changes from master. DO NOT MERGE