Recent activity should have way to delete the last hour of activity

[da2x]

Add a ‘Delete last hour of activity’ link to the bottom of the Recent activity link. Say you accidentally browsed for ‘presents’ and forgot to open a private window. Should only delete activity submitted by the extension, ideally only activity submitted from the active computer/browser but deleting anything added by the extension from any computer/browser should be fine.

Maybe useful to offer more granularity? “Delete activity from last 15 mins, 1 hour, or 2 hours.” Firefox did some research on this for their Forget button and ended up with 5, 2h, and 1d; which may be useful options.