* Output of `node_modules/.bin/electron --version`: v4.0.0
* Operating System (Platform and Version): macOS 10.14.2

* Output of `node_modules/.bin/electron --version` on last known working Electron version (if applicable): 2.0.7

### Expected behavior

I should be able to call `app.setAccessibilitySupportEnabled(true)` during initialization, and the application should start and stay open.

### Actual behavior

The application starts and exits immediately if `app.setAccessibilitySupportEnabled(true)` is called during initialization. Same for passing in `false`.

### How to reproduce

Here is a simple project that shows this error. The application behaves as expected (does not exit immediately) when this line is commented out:
https://github.com/marisademeglio/electron4-setA11yTreeEnabled/blob/master/src/main/main.js#L27

  $ git clone https://github.com/marisademeglio/electron4-setA11yTreeEnabled.git
  $ yarn install
  $ yarn start

atom/browser/api/atom_api_app.cc
args->ThrowError("Must pass valid certificate object.");
    return;
  }
  std::string data;
  if (!cert_data.Get("data", &data))
    return;
  auto certs = net::X509Certificate::CreateCertificateListFromBytes(
      data.c_str(), data.length(), net::X509Certificate::FORMAT_AUTO);
  if (!certs.empty()) {
    scoped_refptr<net::X509Certificate> cert(certs[0].get());
    for (size_t i = 0; i < identities->size(); ++i) {
      if (cert->EqualsExcludingChain((*identities)[i]->certificate())) {
        net::ClientCertIdentity::SelfOwningAcquirePrivateKey(
            std::move((*identities)[i]),
            base::Bind(&GotPrivateKey, delegate, std::move(cert)));
        break;
      }
    }
  }
}
void PassLoginInformation(scoped_refptr<LoginHandler> login_handler,
                          mate::Arguments* args) {
  base::string16 username, password;
  if (args->GetNext(&username) && args->GetNext(&password))
    login_handler->Login(username, password);
  else
    login_handler->CancelAuth();
}
#if defined(USE_NSS_CERTS)
int ImportIntoCertStore(CertificateManagerModel* model,