- Electron version: 1.2.1
- Operating system: Mac OS X

See also https://github.com/electron/electron/issues/5714

STR:
1. Start a webserver on localhost:port that serves a dummy index.html
2. Register a custom http protocol.
   
   ``` js
   electron.protocol.registerStandardSchemes(['foobar', 'http', 'https']);
   
   app.on('ready', function() {
     electron.protocol.registerHttpProtocol('foobar', (request, callback) => {
       const redirectPath = `http://localhost:port/index.html`;
       callback({ method: request.method, referrer: request.referrer, url: redirectPath });
     }, e => { if (e) { console.log(e); } });
   });
   ```
3. Either through devtools, or via some js in our index.html, have a single line that does `fetch('http://localhost:port/index.html')` or anything else from our server.

Results: as soon as `fetch` is called, the webview becomes black, and the devtools crash if they were open. No other visible error or stdout.

If devtools were open, they show this message: "Devtools was disconnected from the page.
Once page is reloaded, DevTools will automatically reconnect."

atom/browser/atom_browser_client.cc
int render_process_id,
    const base::Callback<void(bool)>& callback) {
  content::WebContents* web_contents =
      WebContentsPreferences::GetWebContentsFromProcessID(render_process_id);
  if (!web_contents) {
    callback.Run(false);
    return;
  }
  auto permission_helper =
      WebContentsPermissionHelper::FromWebContents(web_contents);
  if (!permission_helper) {
    callback.Run(false);
    return;
  }
  permission_helper->RequestWebNotificationPermission(callback);
}
void AtomBrowserClient::RenderProcessHostDestroyed(
    content::RenderProcessHost* host) {
  int process_id = host->GetID();
  for (const auto& entry : pending_processes_) {
    if (entry.first == process_id || entry.second == process_id) {
      pending_processes_.erase(entry.first);
      break;
    }
  }
}
}