
IE: Ignore deactivation events that don't activate any other element.

Problem: goog.ui.Button programatically blurs itself when it is
disabled, but this should not cause an enclosing popup to disappear.

R=eae
DELTA=4  (2 added, 0 deleted, 2 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=2435


git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@1073 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

rethinkdb/google-closure-library,rethinkdb/google-closure-library,rethinkdb/google-closure-library,jarib/google-closure-library,Kuniwak/google-closure-library-jsdoc,Kuniwak/google-closure-library-jsdoc,jarib/google-closure-library