Revert of Renaming Gnubby and RemoteSecurityKey files/classes/members

remoting/host/security_key/remote_security_key_message_writer.h

Index: remoting/host/security_key/remote_security_key_message_writer.h
diff --git a/remoting/host/security_key/remote_security_key_message_writer.h b/remoting/host/security_key/remote_security_key_message_writer.h
new file mode 100644
index 0000000000000000000000000000000000000000..d18e34d62fcc75f78bc1192887e9a56edef559a7
--- /dev/null
+++ b/remoting/host/security_key/remote_security_key_message_writer.h
@@ -0,0 +1,31 @@
+// Copyright 2016 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_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_WRITER_H_
+#define REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_WRITER_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "remoting/host/security_key/security_key_message.h"
+
+namespace remoting {
+
+// Used for sending remote security key messages using a file handle.
+class RemoteSecurityKeyMessageWriter {
+ public:
+  virtual ~RemoteSecurityKeyMessageWriter() {}
+
+  // Writes a remote security key message w/o a payload to |output_stream_|.
+  virtual bool WriteMessage(RemoteSecurityKeyMessageType message_type) = 0;
+
+  // Writes a remote security key message with a payload to |output_stream_|.
+  virtual bool WriteMessageWithPayload(
+      RemoteSecurityKeyMessageType message_type,
+      const std::string& message_payload) = 0;
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_WRITER_H_