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
v8::Local<v8::Value> val,
                     scoped_refptr<const net::IOBufferWithSize>* out) {
    auto size = node::Buffer::Length(val);
    if (size == 0) {
      
      
      
      
      *out = nullptr;
      return true;
    }
    auto data = node::Buffer::Data(val);
    if (!data) {
      
      return false;
    }
    *out = new net::IOBufferWithSize(size);
    
    
    memcpy((*out)->data(), data, size);
    return true;
  }
};
}  
namespace atom {
namespace api {
template <typename Flags>
URLRequest::StateBase<Flags>::StateBase(Flags initialState)