Is a ContentResolver's sync frequency based on device time?
<p>When using a <code>ContentResolver</code>, you can set it up to sync periodically using the following call:</p>

<p><code>addPeriodicSync(Account account, String authority, Bundle extras, long pollFrequency)</code></p>

<p><code>pollFrequency</code> determines how frequently it is allowed to sync. Is this based on the device's clock or does it use some timer that is agnostic of other time mechanisms?</p>