am 8fb0faf3: Merge change I0a56959e into eclair-mr2

Merge commit '8fb0faf3cc2f792db8cf38fe5ab67c5eab7baa5c' into eclair-mr2-plus-aosp

* commit '8fb0faf3cc2f792db8cf38fe5ab67c5eab7baa5c':
  Implement a HierarchicalStateMachine