Will be nice to clear auth credentials. For example, I'm using a proxy that accepts options via username:

```
proxy.com:8080
user: wiliam_country_US
```

So, if I want to change the peer node, I change my username:

```
proxy.com:8080
user: wiliam_country_GB
```

But, I'm not changing the proxy, so electron has valid credentials and is not going to trigger `login` event.

I'm searching the way to clean auth settings so electron asks them again.
atom/browser/api/atom_api_session.cc
: devtools_network_emulation_client_id_(base::GenerateGUID()),
      browser_context_(browser_context) {
  
  content::BrowserContext::GetDownloadManager(browser_context)->
      AddObserver(this);
  Init(isolate);
  AttachAsUserData(browser_context);
}
Session::~Session() {
  content::BrowserContext::GetDownloadManager(browser_context())->
      RemoveObserver(this);
  g_sessions.erase(weak_map_id());
}
void Session::OnDownloadCreated(content::DownloadManager* manager,