> proxyRules = schemeProxies[";"<schemeProxies>]
> schemeProxies = [<urlScheme>"="]<proxyURIList>
> urlScheme = "http" | "https" | "ftp" | "socks"
> proxyURIList = <proxyURL>[","<proxyURIList>]
> proxyURL = [<proxyScheme>"://"]<proxyHost>[":"<proxyPort>]

atom/browser/api/atom_api_session.cc
return browser_context_->GetUserAgent();
}
v8::Local<v8::Value> Session::Cookies(v8::Isolate* isolate) {
  if (cookies_.IsEmpty()) {
    auto handle = atom::api::Cookies::Create(isolate, browser_context());
    cookies_.Reset(isolate, handle.ToV8());
  }
  return v8::Local<v8::Value>::New(isolate, cookies_);
}
v8::Local<v8::Value> Session::Protocol(v8::Isolate* isolate) {
  if (protocol_.IsEmpty()) {
    auto handle = atom::api::Protocol::Create(isolate, browser_context());
    protocol_.Reset(isolate, handle.ToV8());
  }
  return v8::Local<v8::Value>::New(isolate, protocol_);
}
v8::Local<v8::Value> Session::WebRequest(v8::Isolate* isolate) {
  if (web_request_.IsEmpty()) {
    auto handle = atom::api::WebRequest::Create(isolate, browser_context());
    web_request_.Reset(isolate, handle.ToV8());
  }
  return v8::Local<v8::Value>::New(isolate, web_request_);
}
mate::Handle<Session> Session::CreateFrom(