Fix the typed test names in the tests for customized typed test parameters.
As required by googletest documentation, the names should not contain an underscore.
PiperOrigin-RevId: 210678652
Add the possibility of specifying the name in type parameterized tests.
Similar to how the last parameter of INSTANTIATE_TEST_CASE_P allows to override the name for (non-type) parametrized tests, this adds the possibility of adding a parameter to INSTANTIATE_TYPED_TEST_CASE_P. The argument has to be a class, which contains a static templated function GetName<T>(int), returning the name for type T.
PiperOrigin-RevId: 210532231
