am 1e6a3a53: Merge "Added more robust tracking and cancelation of events." into gingerbread

Merge commit '1e6a3a53fc4d56e3a0f86c8721dedfd46e738a32' into gingerbread-plus-aosp

* commit '1e6a3a53fc4d56e3a0f86c8721dedfd46e738a32':
  Added more robust tracking and cancelation of events.