
Workaround for a use-after-disposal bug in MenuButton which together with the stricter EventHandler would break Pivot Table.

R=ziegs
DELTA=6  (5 added, 0 deleted, 1 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=2379


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