mockControl.$waitAndVerifyAll() isn't recognized as a method

This is a method of mock control defined [here](https://github.com/google/closure-library/blob/master/closure/goog/testing/mockcontrol.js#L89) and documented [here](https://google.github.io/closure-library/api/goog.testing.MockControl.html). But when I try to use this within a closure_js_test, I get `...mockControl$$.$$waitAndVerifyAll$ is not a function`.

When I look at `bazel-out/k8-fastbuild/bin/external/io_bazel_rules_closure/closure/library/testing/mockcontrol.i.js` I don't see it defined on the prototype for MockControl. My other calls to MockControl (`$resetAll()`, `$tearDown()`, `$replayAll()`, `$verifyAll()`, `createFunctionMock(...)`) all work fine.

My MockControl import is `const MockControl = goog.require('goog.testing.MockControl');`.

Reproduce the failure in a closure_js_test, then compare closure/goog/testing/mockcontrol.js with bazel-out/k8-fastbuild/bin/external/io_bazel_rules_closure/closure/library/testing/mockcontrol.i.js. Check how MockControl is imported and generated for the build; done means $waitAndVerifyAll() is present and callable like the other MockControl methods.

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