base::test::ScopedFeatureList has method:

void InitFromCommandLine(const std::string& enable_features,
                         const std::string& disable_features);

base::FeatureList has method:

void InitializeFromCommandLine(const std::string& enable_features,
                               const std::string& disable_features);

I can fix this at some point, not urgent. I just noticed it when writing a test.