Add missing Element type annotation in goog.string.unescapeEntitiesUsingDom_. This allows this file to pass the BanUnknownTypedClassPropsReferences conformance check.
Add missing Element type annotation in goog.string.unescapeEntitiesUsingDom_. This allows this file to pass the BanUnknownTypedClassPropsReferences conformance check.

RELNOTES: Add missing type annotation within goog.string.unescapeEntitiesUsingDom_

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=223591349

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