Move ProxyConfigService construction onto the IO thread.

chrome/service/net/service_url_request_context.h

Index: chrome/service/net/service_url_request_context.h
diff --git a/chrome/service/net/service_url_request_context.h b/chrome/service/net/service_url_request_context.h
index 6fa24290a080ec26eb9e9f009fb22d8a01558fc6..d2fa207a6859fd4d7606cb93e82aec0a4a2acf68 100644
--- a/chrome/service/net/service_url_request_context.h
+++ b/chrome/service/net/service_url_request_context.h
@@ -67,9 +67,11 @@ class ServiceURLRequestContextGetter : public net::URLRequestContextGetter {
   ServiceURLRequestContextGetter();
   virtual ~ServiceURLRequestContextGetter();
 
+  void StartTearDown();
+
   std::string user_agent_;
+  scoped_refptr<base::SingleThreadTaskRunner> glib_task_runner_;

[digit1, 2012/10/19 10:32:46]

I believe that mentioning glib in source files and headers that are not 100%
specific to the Linux port is misleading.

It would be nuch better if you could name this differently (e.g.
ui_task_runner).

   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
-  scoped_ptr<net::ProxyConfigService> proxy_config_service_;
   scoped_ptr<net::URLRequestContext> url_request_context_;
 };