Make new fake tests that complete after 500 ms in order to test timeouts. The test before was flaky if the tests completed in their iframe before the timeout code executed.
Make new fake tests that complete after 500 ms in order to test timeouts. The test before was flaky if the tests completed in their iframe before the timeout code executed.

RELNOTES: n/a

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=196187502

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