Revert r59012 which started using Chrome sockets for sync.

jingle/notifier/communicator/product_info.cc

Index: jingle/notifier/communicator/product_info.cc
diff --git a/jingle/notifier/communicator/product_info.cc b/jingle/notifier/communicator/product_info.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c1deafbf57a4789c1c9aef132678a367aa4f9919
--- /dev/null
+++ b/jingle/notifier/communicator/product_info.cc
@@ -0,0 +1,15 @@
+// Copyright (c) 2009 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.
+
+#include <string>
+
+namespace notifier {
+std::string GetUserAgentString() {
+  return kXmppProductName;
+}
+
+std::string GetProductSignature() {
+  return kXmppProductName;
+}
+}  // namespace notifier