Automated g4 rollback of changelist 155137803.
Automated g4 rollback of changelist 155137803.

*** Reason for rollback ***

Breaks

*** Original change description ***

Roll forward after adding more checks for undefined.

Rollback changelist was 154745081.

*** Original change description ***

Automated g4 rollback of changelist 154736224.

*** Reason for rollback ***

Breaks some jscompiler tests

*** O...

***

ROLLBACK_OF=155137803

RELNOTES: n/a

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=155152251

lucidsoftware/closure-library,ikabirov/closure-library,lucidsoftware/closure-library,teppeis/closure-library,google/closure-library,google/closure-library,platinumpixs/google-closure-library,lucidsoftware/closure-library,ikabirov/closure-library,ikabirov/closure-library,teppeis/closure-library,platinumpixs/google-closure-library,teppeis/closure-library,google/closure-library,platinumpixs/google-closure-library,google/closure-library,google/closure-library,ikabirov/closure-library,teppeis/closure-library,lucidsoftware/closure-library,platinumpixs/google-closure-library