
Fix for race condition where a cancelDelayedDismiss occurs within the
last 10ms of a delayedDismiss occurring causing the cancel
to do nothing.

R=gboyer
DELTA=26  (19 added, 0 deleted, 7 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=3416


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