am 2f0b1c13: Doc change: cherry-pick from master. ->Subject: Android application files for the Activity Testing Tutorial

Merge commit '2f0b1c1335f6212889633e170d71c56dba70e78e' into froyo-plus-aosp

* commit '2f0b1c1335f6212889633e170d71c56dba70e78e':
  Doc change: cherry-pick from master. ->Subject: Android application files for the Activity Testing Tutorial