ce85176a4e
Runs all FlutterChannelKeyResponderTest tests in an AutoReleasepoolTest, which ensures all allocations are cleaned up. Also replaces the use of OCMock in FlutterChannelKeyResponderTest with a fake FlutterBasicMessageChannel subclass. This avoids unnecessary use of OCMock in the tests, which has been responsible for flakiness in some tests, in particular where the mock is used across threads. This test was not problematic, but the fake makes the tests more readable. Issue: https://github.com/flutter/flutter/issues/104789 Issue: https://github.com/flutter/flutter/issues/127441 Issue: https://github.com/flutter/flutter/issues/124840 [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style