Jeff Muizelaar 0442ca87fb Bug 1367538. Clear user data after we're done with the recorder. r=lsalzman
This helps keep us from accumulating all of the recorders.

The basic idea is to track weak references to the SourceSurfaces and Fonts that
we add UserData to in DrawEventRecorderPrivate and then clear these UserData's
when we're done recording.

This adds a RemoveAndDestroy helper to UserData to make this possible.
2017-06-09 14:31:35 -04:00
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2017-06-07 22:55:56 -04:00