Create a URLRequestContext for PAC fetching.

chrome/browser/dom_ui/net_internals_ui.cc

Index: chrome/browser/dom_ui/net_internals_ui.cc
diff --git a/chrome/browser/dom_ui/net_internals_ui.cc b/chrome/browser/dom_ui/net_internals_ui.cc
index f44ac9e0ce14367f75b4e051b8f2c3952bb1fd5b..0cea72a44fa63bd31df6f4e61b3624b4233d236a 100644
--- a/chrome/browser/dom_ui/net_internals_ui.cc
+++ b/chrome/browser/dom_ui/net_internals_ui.cc
@@ -833,7 +833,8 @@ void NetInternalsMessageHandler::IOThreadImpl::OnStartConnectionTests(
   // For example, turn "www.google.com" into "http://www.google.com".
   GURL url(URLFixerUpper::FixupURL(UTF16ToUTF8(url_str), std::string()));
 
-  connection_tester_.reset(new ConnectionTester(this, io_thread_));
+  connection_tester_.reset(new ConnectionTester(
+      this, io_thread_->globals()->proxy_script_fetcher_context.get()));
   connection_tester_->RunAllTests(url);
 }