
Don't create event objects in goog.events.dispatchEvent unless there are listeners to the event type

R=pupius
DELTA=14  (6 added, 7 deleted, 1 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=375


yamadatomonori/closure-library,yamadatomonori/closure-library,yamadatomonori/closure-library