
Cleaned up keyEventTarget_ member of goog.ui.Container on disposal.

R=nicksantos
DELTA=2  (1 added, 0 deleted, 1 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=2240


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