This is the Android equivalent of Bug 578694. We can either do this via marking everything as deleted (which we might already do), which would satisfy, or we can use some other approach: * Local broadcast notifications (http://developer.android.com/reference/android/support/v4/content/LocalBroadcastManager.html) * Sentinel DB records ("I deleted everything in this table prior to this date"), with a triggered sync * Some combination of the two.

Aakarshan wrote to me asking about this bug. Vivek and Nick, how do you feel about helping out? Mentors: it's worth starting to think about Bug 1191450, too.

I'm happy to help with this, especially with reviews. I think local broadcast notifications are not a great fit, since Sync-stuff won't be listening by default. Best to use non-exported system broadcasts, so that the system wakes us. Based on https://bugzilla.mozilla.org/show_bug.cgi?id=578694#c16, the idea here is to delete records remotely, which in Sync-land means uploading them marked as deleted. I would expect us to do that already, unless our "Clear Private Data > History" is doing a "DELETE * FROM history" instead of a more nuanced thing. Start by understanding if the database removes local rows, or if it updates the rows to be marked as deleted for Sync.

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