Strip brackets from IPv6 host literals before passing down to PAC script.

net/data/proxy_resolver_v8_unittest/resolve_host.js

Index: net/data/proxy_resolver_v8_unittest/resolve_host.js
diff --git a/net/data/proxy_resolver_v8_unittest/resolve_host.js b/net/data/proxy_resolver_v8_unittest/resolve_host.js
new file mode 100644
index 0000000000000000000000000000000000000000..0461de9862872457f98499b019ecda75714e5209
--- /dev/null
+++ b/net/data/proxy_resolver_v8_unittest/resolve_host.js
@@ -0,0 +1,9 @@
+// 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.
+
+// This script passes the URL's host to dnsResolveEx().
+function FindProxyForURL(url, host) {
+  dnsResolveEx(host);
+  return 'DIRECT';
+}