These only fail on the bots, not locally.
plugins/snapshotting/set-plugin-size-to-tiny.html [ Failure ]
plugins/snapshotting/simple.html [ Failure ]
plugins/snapshotting/snapshot-plugin-not-quite-blocked-by-image.html [ Failure ]
Skipping for now until I get a chance to stare at them.
Mass closing plug-in bugs, as plug-in support has been removed from WebKit.
Please comment and/or reopen if this still affects WebKit in some way.