Merge "[adb] Cache features set inside the client process" am: 6e861740 am: 25fc8635

}

bool adb_get_feature_set(FeatureSet* feature_set, std::string* error) {

    static FeatureSet* features = nullptr;

    if (!features) {

        std::string result;

        if (adb_query(format_host_command("features"), &result, error)) {

        *feature_set = StringToFeatureSet(result);

            features = new FeatureSet(StringToFeatureSet(result));

        }

    }

    if (features) {

        *feature_set = *features;

        return true;

    }

    feature_set->clear();