Automated g4 rollback of changelist 236858393.
Automated g4 rollback of changelist 236858393.

*** Reason for rollback ***

http://test/ui#cl=236858393&p=typescript&t=//javascript/typescript/compiler/test/type_check_dependencies:build_test

*** Original change description ***

RELNOTES: Allow using Trusted Types in base.js.

I've shaped it in a way that if Trusted Types are disabled then all of this should compile out.

***

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=236891506

google/closure-library,google/closure-library,lucidsoftware/closure-library,lucidsoftware/closure-library,google/closure-library,lucidsoftware/closure-library,google/closure-library,google/closure-library,lucidsoftware/closure-library