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_url_request.cc
return IsFlagSet(RequestStateFlags::kClosed);
}
URLRequest::ResponseState::ResponseState()
    : StateBase(ResponseStateFlags::kNotStarted) {}
bool URLRequest::ResponseState::NotStarted() const {
  return *this == ResponseStateFlags::kNotStarted;
}
bool URLRequest::ResponseState::Started() const {
  return IsFlagSet(ResponseStateFlags::kStarted);
}
bool URLRequest::ResponseState::Ended() const {
  return IsFlagSet(ResponseStateFlags::kEnded);
}
bool URLRequest::ResponseState::Failed() const {
  return IsFlagSet(ResponseStateFlags::kFailed);
}
URLRequest::URLRequest(v8::Isolate* isolate, v8::Local<v8::Object> wrapper) {
  InitWith(isolate, wrapper);
}
URLRequest::~URLRequest() {
  
  
  
  if (atom_request_) {
    atom_request_->Terminate();
  }
}
mate::WrappableBase* URLRequest::New(mate::Arguments* args) {