a443c671d01350370d6f2e818f7abfa2c2b79798
The issue that blocks these mocking methods have been resolved.
However, there is [one more mention of this issue in `run_tests.py`](1410d8beaa/testing/run_tests.py (L400)) and I have no idea why it was marked so. It was originally added [here](https://github.com/flutter/engine/pull/19033/files#diff-521d7c59c3f721b259f094c760c2613e16e889b0f24702280924466109e3b0b0R137).
[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
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