am 27626c03: Add API key to BackupRestore sample code.

Merge commit '27626c03e4db54d1edfaa28f10bef1ef9ded9995' into froyo-plus-aosp

* commit '27626c03e4db54d1edfaa28f10bef1ef9ded9995':
  Add API key to BackupRestore sample code.