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diff --git a/remoting/base/protocol_util.h b/remoting/base/protocol_util.h
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+++ b/remoting/base/protocol_util.h
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+// Copyright (c) 2010 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 REMOTING_BASE_PROTOCOL_UTIL_H_
+#define REMOTING_BASE_PROTOCOL_UTIL_H_
+
+#include "google/protobuf/message_lite.h"
+#include "media/base/data_buffer.h"
+
+// This file defines utility methods used for encoding and decoding the protocol
+// used in Chromoting.
+namespace remoting {
+
+// Serialize the Protocol Buffer message and provide sufficient framing for
+// sending it over the wire.
+// This will provide sufficient prefix and suffix for the receiver side to
+// decode the message.
+scoped_refptr<media::DataBuffer> SerializeAndFrameMessage(
+    const google::protobuf::MessageLite& msg);
+
+}  // namespace remoting
+
+#endif  // REMOTING_BASE_PROTOCOL_UTIL_H_