am ab2e6284: Merge "Use the private version of userActivity." into gingerbread

Merge commit 'ab2e6284845794079d809e62c52c6c380b31c4b5' into gingerbread-plus-aosp

* commit 'ab2e6284845794079d809e62c52c6c380b31c4b5':
  Use the private version of userActivity.