Create a URLRequestContext for PAC fetching.

net/proxy/proxy_service.cc

Index: net/proxy/proxy_service.cc
diff --git a/net/proxy/proxy_service.cc b/net/proxy/proxy_service.cc
index f321ef03433113719e5c7542dd502206d655a152..13d049e49ab03034d98ec77cc97ba08d0c64c0f2 100644
--- a/net/proxy/proxy_service.cc
+++ b/net/proxy/proxy_service.cc
@@ -468,9 +468,13 @@ ProxyService* ProxyService::CreateFixed(const std::string& proxy) {
 
 // static
 ProxyService* ProxyService::CreateDirect() {
+  return CreateDirectWithNetLog(NULL);
+}
+
+ProxyService* ProxyService::CreateDirectWithNetLog(NetLog* net_log) {
   // Use direct connections.
   return new ProxyService(new ProxyConfigServiceDirect, new ProxyResolverNull,
-                          NULL);
+                          net_log);
 }
 
 // static