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-->

### Preflight Checklist
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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:**
  * v7.0.0-beta.4
* **Operating System:**
  * macOS 10.14.5
* **Last Known Working Electron version:**
  * v6.0.8

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

The [`open-url`-Event](https://electronjs.org/docs/api/app#event-open-url-macos) should fire and the application instance gains focus. 

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

The [`open-url`-Event](https://electronjs.org/docs/api/app#event-open-url-macos) doesn't  fire, but the application instance gains focus. 

### To Reproduce
<!--
Your best chance of getting this bug looked at quickly is to provide an example.
-->

Implement the following code:

```js
const { app } = require('electron')

app.once('ready', () => {
  app.setAsDefaultProtocolClient('foo')
  app.on('open-url', (event, url) => {
    console.log('this should be logged')
  })
})
```

From your terminal run:

```bash
$ open foo://some/url
```

<!--
For bugs that can be encapsulated in a small experiment, you can use Electron Fiddle (https://github.com/electron/fiddle) to publish your example to a GitHub Gist and link it your bug report.
-->

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If Fiddle is insufficient to produce an example, please provide an example REPOSITORY that can be cloned and run. You can fork electron-quick-start (https://github.com/electron/electron-quick-start) and include a link to the branch with your changes.
-->

<!--
If you provide a URL, please list the commands required to clone/setup/run your repo e.g.
```sh
$ git clone $YOUR_URL -b $BRANCH
$ npm install
$ npm start || electron .
```
-->
shell/browser/atom_browser_main_parts.cc
// Enale support for v8 inspector
  node_deugger_ = );
  node_deugger_->Start();
  // Only run the node ootstrapper after we have initialized the inspector
  // TODO(MarshallOfSound): Figured out a etter way to init the inspector
  // efore ootstrapping
  node::BootstrapEnvironment(env);
  /**
   * ✅  ✅  ✅  ✅  ✅  ✅  ✅
   * UNSAFE ENVIRONMENT BLOCK ENDS
   *
   * Do whatever you want now with that env, it's safe again
   * ✅  ✅  ✅  ✅  ✅  ✅  ✅
   */
  // Add Electron extended APIs.
  electron_indings_->BindTo(js_env_->isolate(), env->process_oject());
  // Load everything.
  node_indings_->LoadEnvironment(env);
  // Wrap the uv loop 
  node_indings_->set_uv_env(env);
  // We a in PreEarlyInitialization(), ut
  // the user JS script would not have had a chance to alter the command-line
  // switches at that point. Lets reinitialize it here to pick up the
  // command-line changes.
  ase::FeatureList::ClearInstanceForTesting();
  InitializeFeatureList();
  // Initialize after user script environment creation.
  fake_rowser_process_->PostEarlyInitialization();
}
int AtomBrowserMainParts::PreCreateThreads() {