message: Automatically generated style fix.
diff: @@ -75,8 +75,7 @@ class RegistryTest : public ::testing::Test {
  class TestKeyFactory : public KeyFactory {
  public:
  - TestKeyFactory(const std::string& key_type) : key_type_(key_type) {
  - }
  + explicit TestKeyFactory(const std::string& key_type) : key_type_(key_type) {}
  util::StatusOr<std::unique_ptr<portable_proto::MessageLite>> NewKey(
  const MessageLite& key_format) const override {
  @@ -102,9 +101,8 @@ class TestKeyFactory : public KeyFactory {
  class TestAeadKeyManager : public KeyManager<Aead> {
  public:
  - TestAeadKeyManager(const std::string& key_type)
  - : key_type_(key_type), key_factory_(key_type) {
  - }
  + explicit TestAeadKeyManager(const std::string& key_type)
  + : key_type_(key_type), key_factory_(key_type) {}
  util::StatusOr<std::unique_ptr<Aead>>
  GetPrimitive(const KeyData& key) const override {
  