am 29aac8d: AI 147618: CTS: add test cases for android.app.ExpandableLis

Merge commit '29aac8d26d473cd99283a1d39436a48807d7badc' into donut

* commit '29aac8d26d473cd99283a1d39436a48807d7badc':
  AI 147618: CTS: add test cases for android.app.ExpandableListActivity
tree: b1839e13b59096cf4ea3e095376305a596be1bc8
  1. tests/
  2. tools/
  3. Android.mk