Some "net" trace events are logged with "disabled-by-default-" prefix and some are not.
e.g.
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("net"), "NetworkDelegate::NotifyStartTransaction");
vs
TRACE_EVENT0("net", "SocketPosix::OnFileCanReadWithoutBlocking");
We should convert them to all using "disabled-by-default-" prefix.
Comment 1 by mmenke@chromium.org
, Nov 30 2016