Better match IE's proxy settings....

net/proxy/proxy_script_fetcher.cc

Index: net/proxy/proxy_script_fetcher.cc
===================================================================
--- net/proxy/proxy_script_fetcher.cc	(revision 22399)
+++ net/proxy/proxy_script_fetcher.cc	(working copy)
@@ -57,8 +57,8 @@
 
   // ProxyScriptFetcher methods:
 
-  virtual void Fetch(const GURL& url, std::string* bytes,
-                     CompletionCallback* callback);
+  virtual int Fetch(const GURL& url, std::string* bytes,
+                    CompletionCallback* callback);
   virtual void Cancel();
 
   // URLRequest::Delegate methods:
@@ -137,9 +137,9 @@
   // ensure that the delegate (this) is not called again.
 }
 
-void ProxyScriptFetcherImpl::Fetch(const GURL& url,
-                                   std::string* bytes,
-                                   CompletionCallback* callback) {
+int ProxyScriptFetcherImpl::Fetch(const GURL& url,
+                                  std::string* bytes,
+                                  CompletionCallback* callback) {
   // It is invalid to call Fetch() while a request is already in progress.
   DCHECK(!cur_request_.get());
 
@@ -171,6 +171,7 @@
 
   // Start the request.
   cur_request_->Start();
+  return ERR_IO_PENDING;
 }
 
 void ProxyScriptFetcherImpl::Cancel() {