- Electron version: 1.2.5
- Operating system: Windows 10

My application has a custom "res://" protocol. It appears to register correctly (no errors or anything) but as you can see from the picture I'm getting the error **net::ERR_UNKNOWN_URL_SCHEME**. This is working in version 1.2.4.

![image](https://cloud.githubusercontent.com/assets/4183007/16391832/d5fa3c80-3c76-11e6-9f7a-c7d746149f25.png)

atom/browser/api/atom_api_session.cc
const scoped_refptr<net::URLRequestContextGetter>& context_getter,
    Session::CacheAction action,
    const net::CompletionCallback& callback) {
  auto request_context = context_getter->GetURLRequestContext();
  auto http_cache = request_context->http_transaction_factory()->GetCache();
  if (!http_cache)
    RunCallbackInUI<int>(callback, net::ERR_FAILED);
  
  using BackendPtr = disk_cache::Backend*;
  auto* backend_ptr = new BackendPtr(nullptr);
  net::CompletionCallback on_get_backend =
      base::Bind(&OnGetBackend, base::Owned(backend_ptr), action, callback);
  int rv = http_cache->GetBackend(backend_ptr, on_get_backend);
  if (rv != net::ERR_IO_PENDING)
    on_get_backend.Run(net::OK);
}
void SetProxyInIO(net::URLRequestContextGetter* getter,