Add a source to V8 proxy resolver-initiated DNS requests,

net/proxy/sync_host_resolver_bridge_unittest.cc

Index: net/proxy/sync_host_resolver_bridge_unittest.cc
===================================================================
--- net/proxy/sync_host_resolver_bridge_unittest.cc	(revision 118864)
+++ net/proxy/sync_host_resolver_bridge_unittest.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -92,7 +92,7 @@
     // Do a synchronous host resolve.
     HostResolver::RequestInfo info(HostPortPair::FromURL(url));
     AddressList addresses;
-    int rv = host_resolver_->Resolve(info, &addresses);
+    int rv = host_resolver_->Resolve(info, &addresses, net_log);
 
     EXPECT_EQ(ERR_ABORTED, rv);