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* [ 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
auto* download_manager =
      content::BrowserContext::GetDownloadManager(browser_context());
  auto download_params = std::make_unique<download::DownloadUrlParameters>(
      url, MISSING_TRAFFIC_ANNOTATION);
  download_manager->DownloadUrl(std::move(download_params));
}
void Session::CreateInterruptedDownload(const gin_helper::Dictionary& options) {
  int64_t offset = 0, length = 0;
  double start_time = base::Time::Now().ToDoubleT();
  std::string mime_type, last_modified, etag;
  base::FilePath path;
  std::vector<GURL> url_chain;
  options.Get("path", &path);
  options.Get("urlChain", &url_chain);
  options.Get("mimeType", &mime_type);
  options.Get("offset", &offset);
  options.Get("length", &length);
  options.Get("lastModified", &last_modified);
  options.Get("eTag", &etag);
  options.Get("startTime", &start_time);
  v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
  if (path.empty() || url_chain.empty() || length == 0) {
    isolate->ThrowException(v8::Exception::Error(gin::StringToV8(
        isolate, "Must pass non-empty path, urlChain and length.")));
    return;
  }