The FroyoLocationUpdateRequester does not contain an implementation for the
requestLocationUpdates() method defined in the abstract base class
LocationUpdateRequester.
Suggested fix: pull the implementation for requestLocationUpdates() up from
the child class "GingerbreadLocationUpdateRequester".
Additional suggestion: Add a "removeUpdates(PendingIntent p)" to the class
hierarchy, so that the requester (code that actually holds the PendingIntent)
can signal to the location manager that it's no longer interested in location
updates. See attached files for implementation. Implement similar for
LegacyLocationUpdateRequester.