Noticed after changing the following line to an massert():

https://github.com/mongodb/mongo/blob/master/src/mongo/scripting/engine_v8.cpp#L890

Needed for:

• group() specifies a 100ms timeout when executing a trivial 'assign to global' script. I think this timeout can be safely removed. See group.cpp, lines 83, 84, 154 and 169.
• $where specifies a 60 second timeout per document. See matcher.cpp L115 and L1173.
• dbEval() also uses cmdLine.quota to determine if it should limit db.eval() times to 10 minutes. See dbeval.cpp L86.
• benchRun() uses the timeout in a few places. See bench.cpp, L381, L401, L448, L480, L509, L542.