Don't preresolve DNS if a fixed proxy configuration is in place.

net/proxy/proxy_service.h

Index: net/proxy/proxy_service.h
diff --git a/net/proxy/proxy_service.h b/net/proxy/proxy_service.h
index 9fdcb5815c0250e771d4f1f43d9c2ece931c25cf..91d36843f04781a3ce712a56b747269f99aefa7f 100644
--- a/net/proxy/proxy_service.h
+++ b/net/proxy/proxy_service.h
@@ -122,13 +122,14 @@ class NET_EXPORT ProxyService : public NetworkChangeNotifier::IPAddressObserver,
   //   3.  named proxy
   //
   // Profiling information for the request is saved to |net_log| if non-NULL.
-  int ResolveProxy(const GURL& url,
-                   int load_flags,
-                   ProxyInfo* results,
-                   const net::CompletionCallback& callback,
-                   PacRequest** pac_request,
-                   NetworkDelegate* network_delegate,
-                   const BoundNetLog& net_log);
+  // This method is virtual for unit testing.

[eroman, 2014/09/23 20:50:42]

Can your tests can instead use: ProxyService::CreateFixed() ?

I don't want this to have to be virtual just for a test purpose.

[bemasc, 2014/09/24 18:34:37]

Done.

+  virtual int ResolveProxy(const GURL& url,
+                           int load_flags,
+                           ProxyInfo* results,
+                           const net::CompletionCallback& callback,
+                           PacRequest** pac_request,
+                           NetworkDelegate* network_delegate,
+                           const BoundNetLog& net_log);
 
   // This method is called after a failure to connect or resolve a host name.
   // It gives the proxy service an opportunity to reconsider the proxy to use.