Add the Chrome startup category
Add the Chrome startup category

UIforETW can request that specific Chrome categories be turned
on for tracing. This adds another one to the list.

https://codereview.chromium.org/1386193002/diff/40001/base/trace_event/trace_event_etw_export_win.cc

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