This seems to be a pattern with Google/Chromium projects. NaCl for example is very cool and potentially broadly applicable as a sandboxing tech, but last I look

This seems to be a pattern with Google/Chromium projects. NaCl for example is very cool and potentially broadly applicable as a sandboxing tech, but last I looked would be very difficult to untangle from Chromium, and all that work could be undone at any moment by a Chromium-internal change.