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* [ x] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
* [ x] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
* [ x] I have searched the issue tracker for an issue that matches the one I want to file, without success.

### Issue Details

* **Electron Version:**
  * <!-- (output of `node_modules/.bin/electron --version`) e.g. 4.0.3 --> 10.1.1
* **Operating System:**
  * <!-- (Platform and Version) e.g. macOS 10.13.6 / Windows 10 (1803) / Ubuntu 18.04 x64 --> Windows 10
* **Last Known Working Electron version:**
  * <!-- (if applicable) e.g. 3.1.0 --> 6.1.10

### Expected Behavior
<!-- A clear and concise description of what you expected to happen. -->

The request to function normally except the certificate handler works as intended.

### Actual Behavior
<!-- A clear and concise description of what actually happened. -->

When sending concurrent requests at once, the net request throws an error with net::ERR_CERT_DATABASE_CHANGED.

### To Reproduce

session.setCertificateVerifyProc((r, cb) => cb(0));

// Send net requests as normal

Soon enough, the code will start producing the error shown above.

shell/browser/api/electron_api_session.cc
gin::Arguments* args) {
  GURL url;
  if (!options.Get("url", &url) || !url.is_valid()) {
    args->ThrowTypeError(
        "Must pass non-empty valid url to session.preconnect.");
    return;
  }
  int num_sockets_to_preconnect = 1;
  if (options.Get("numSockets", &num_sockets_to_preconnect)) {
    const int kMinSocketsToPreconnect = 1;
    const int kMaxSocketsToPreconnect = 6;
    if (num_sockets_to_preconnect < kMinSocketsToPreconnect ||
        num_sockets_to_preconnect > kMaxSocketsToPreconnect) {
      args->ThrowTypeError(
          base::StringPrintf("numSocketsToPreconnect is outside range [%d,%d]",
                             kMinSocketsToPreconnect, kMaxSocketsToPreconnect));
      return;
    }
  }
  DCHECK_GT(num_sockets_to_preconnect, 0);
  base::PostTask(
      FROM_HERE, {content::BrowserThread::UI},
      base::BindOnce(&StartPreconnectOnUI, base::Unretained(browser_context_),
                     url, num_sockets_to_preconnect));
}
v8::Local<v8::Promise> Session::CloseAllConnections() {