Xhprof generates this data now. Custom profiling of various
sub-function units are kept.
Calls to profiler represented about 3% of page execution
time on Special:BlankPage (1.5% in/out); after this change
it's down to about 0.98% of page execution time.
Change-Id: Id9a1dc9d8f80bbd52e42226b724a1e1213d07af7
Pulls one pure method with no state from EmailNotification into a
public static method. This is done so that extensions (Flow, maybe
others) can replace the Email notifications with alternative ones (Echo)
while still updating the watchlist.
A better solution might be to extricate watchlist update from email
notifications, but this seems like a reasonable first step.
Bug: 66876
Change-Id: Iae213b87706c447b880244711e7747954423bb69
