Change usage of native Promise to goog.Promise in goog.testing.JsTdAsyncWrapper. IE11 does not support native promises.
Change usage of native Promise to goog.Promise in goog.testing.JsTdAsyncWrapper. IE11 does not support native promises.

RELNOTES: Fix for JSTD adapter for browsers without native Promise.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=125563898

platinumpixs/google-closure-library,Medium/closure-library,joeltine/closure-library,ikabirov/closure-library,redforks/closure-library,ikabirov/closure-library,platinumpixs/google-closure-library,google/closure-library,lucidsoftware/closure-library,redforks/closure-library,teppeis/closure-library,Medium/closure-library,codyebberson/closure-library,lucidsoftware/closure-library,lucidsoftware/closure-library,platinumpixs/google-closure-library,redforks/closure-library,platinumpixs/google-closure-library,google/closure-library,Medium/closure-library,codyebberson/closure-library,teppeis/closure-library,Medium/closure-library,lucidsoftware/closure-library,ChadKillingsworth/closure-library,joeltine/closure-library,google/closure-library,ChadKillingsworth/closure-library,codyebberson/closure-library,joeltine/closure-library,teppeis/closure-library,teppeis/closure-library,google/closure-library,redforks/closure-library,joeltine/closure-library,google/closure-library,codyebberson/closure-library,ikabirov/closure-library,ChadKillingsworth/closure-library,ikabirov/closure-library,ChadKillingsworth/closure-library