
Automated g4 rollback.

*** Reason for rollback ***

Many apps are accessing components' dom helpers after dispose.

*** Original change description ***

Make goog.ui.Component's getDomHelper non-nullable.


Revision created by MOE tool push_codebase.
MOE_MIGRATION=126004


git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@178 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

thinkfuse/google-closure,thinkfuse/google-closure,KgDesignes/closure-library,homer6/google-closure-library,jarib/google-closure-library,mdavid/closure-library,prop/closure-library,homer6/google-closure-library,prop/closure-library,rethinkdb/google-closure-library,KgDesignes/closure-library,mdavid/closure-library,jarib/google-closure-library,neilrahilly/closure-library,Kuniwak/google-closure-library-jsdoc,thinkfuse/google-closure,rethinkdb/google-closure-library,homer6/google-closure-library,Kuniwak/google-closure-library-jsdoc,rethinkdb/google-closure-library,KgDesignes/closure-library,knutwalker/google-closure-library,knutwalker/google-closure-library,neilrahilly/closure-library,neilrahilly/closure-library,prop/closure-library,mdavid/closure-library