Revert r59012 which started using Chrome sockets for sync.

jingle/notifier/communicator/product_info.h

Index: jingle/notifier/communicator/product_info.h
diff --git a/jingle/notifier/communicator/product_info.h b/jingle/notifier/communicator/product_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..9e8e5d0cad4b6920711a08d82d4f03208d328079
--- /dev/null
+++ b/jingle/notifier/communicator/product_info.h
@@ -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.
+
+#ifndef JINGLE_NOTIFIER_COMMUNICATOR_PRODUCT_INFO_H_
+#define JINGLE_NOTIFIER_COMMUNICATOR_PRODUCT_INFO_H_
+
+#include <string>
+
+namespace notifier {
+std::string GetUserAgentString();
+std::string GetProductSignature();
+}  // namespace notifier
+
+#endif  // JINGLE_NOTIFIER_COMMUNICATOR_PRODUCT_INFO_H_