Increase trace-to-file timeout
Increase trace-to-file timeout

UIforETW automatically stops tracing to file after a certain period of
time. That time was two minutes, but a couple of people hit that limit
during normal usage. This change increases it to five minutes.

MikeMarcin/UIforETW,ariccio/UIforETW,google/UIforETW,google/UIforETW,MikeMarcin/UIforETW,MikeMarcin/UIforETW,mwinterb/UIforETW,ariccio/UIforETW,google/UIforETW,mwinterb/UIforETW,google/UIforETW,mwinterb/UIforETW,ariccio/UIforETW,ariccio/UIforETW