GTTF: test server cleanup:

chrome/test/automation/automation_proxy_uitest.cc

Index: chrome/test/automation/automation_proxy_uitest.cc
diff --git a/chrome/test/automation/automation_proxy_uitest.cc b/chrome/test/automation/automation_proxy_uitest.cc
index bace7906cc824e5d59d3834b7848435f2ba6d144..d6911a47bf482ced9842173952096cc7489c4e80 100644
--- a/chrome/test/automation/automation_proxy_uitest.cc
+++ b/chrome/test/automation/automation_proxy_uitest.cc
@@ -972,8 +972,7 @@ TEST_F(ExternalTabUITest, FLAKY_TabPostMessage) {
 
 TEST_F(ExternalTabUITest, FLAKY_PostMessageTarget)  {
   const wchar_t kDocRoot[] = L"chrome/test/data/external_tab";
-  scoped_refptr<HTTPTestServer> server(
-      HTTPTestServer::CreateServer(kDocRoot, NULL));
+  scoped_refptr<HTTPTestServer> server(HTTPTestServer::CreateServer(kDocRoot));
   ASSERT_THAT(server.get(), testing::NotNull());
 
   scoped_refptr<TabProxy> tab;