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### Issue Details

* **Electron Version:**
  * 9.1.1
  * 10.0.0-beta.4
* **Operating System:**
  * Linux x64

### Expected Behavior

Don't crash when `nodeIntegrationInWorker` is `true` and a service worker is being registered. :slightly_smiling_face:

### Actual Behavior

A crash occurs once the service worker is attempted to be registered (blank page, DevTools disconnects).

### To Reproduce

Attempt to register a service worker with `nodeIntegrationInWorker` set to `true`.

```sh
$ git clone https://github.com/lgrahl/electron-node-integration-service-worker-crash
$ npm install
$ npm start
```

Commit https://github.com/lgrahl/electron-node-integration-service-worker-crash/commit/97b14f2c599bfd25ce416b8a7ee91d9122bbfe2c
shell/browser/electron_browser_client.h
content::PosixFileDescriptorInfo* mappings) override;
#endif
  std::string GetUserAgent() override;
  void SetUserAgent(const std::string& user_agent);
  void SetCanUseCustomSiteInstance(bool should_disable);
  bool CanUseCustomSiteInstance() override;
 protected:
  void RenderProcessWillLaunch(content::RenderProcessHost* host) override;
  content::SpeechRecognitionManagerDelegate*
  CreateSpeechRecognitionManagerDelegate() override;
  content::TtsPlatform* GetTtsPlatform() override;
  void OverrideWebkitPrefs(content::RenderViewHost* render_view_host,
                           content::WebPreferences* prefs) override;
  SiteInstanceForNavigationType ShouldOverrideSiteInstanceForNavigation(
      content::RenderFrameHost* current_rfh,
      content::RenderFrameHost* speculative_rfh,
      content::BrowserContext* browser_context,
      const GURL& url,
      bool has_navigation_started,
      bool has_request_started,
      content::SiteInstance** affinity_site_instance) const override;
  void RegisterPendingSiteInstance(
      content::RenderFrameHost* render_frame_host,
      content::SiteInstance* pending_site_instance) override;
  void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                      int child_process_id) override;
  void DidCreatePpapiPlugin(content::BrowserPpapiHost* browser_host) override;
  std::string GetGeolocationApiKey() override;
  scoped_refptr<content::QuotaPermissionContext> CreateQuotaPermissionContext()
      override;