Revert of Renaming Gnubby and RemoteSecurityKey files/classes/members

remoting/host/security_key/remote_security_key_message_reader.h

Index: remoting/host/security_key/remote_security_key_message_reader.h
diff --git a/remoting/host/security_key/remote_security_key_message_reader.h b/remoting/host/security_key/remote_security_key_message_reader.h
new file mode 100644
index 0000000000000000000000000000000000000000..035244e5f34ca320cceeb7e91fe6dab06bca103b
--- /dev/null
+++ b/remoting/host/security_key/remote_security_key_message_reader.h
@@ -0,0 +1,32 @@
+// 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_READER_H_
+#define REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_READER_H_
+
+#include "base/callback_forward.h"
+#include "remoting/host/security_key/security_key_message.h"
+
+namespace remoting {
+
+// Interface used for listening for remote security key messages and notifying
+// listeners when one is received.
+class RemoteSecurityKeyMessageReader {
+ public:
+  virtual ~RemoteSecurityKeyMessageReader() {}
+
+  // Starts the process of listening for security key messages.
+  // |message_callback| is called for each received message.
+  // |error_callback| is called in case of an error or the file is closed.
+  // This method is asynchronous, callbacks will be called on the thread this
+  // method is called on.  These callbacks can be called up to the point this
+  // instance is destroyed and may be destroyed as a result of the callback
+  // being invoked.
+  virtual void Start(const SecurityKeyMessageCallback& message_callback,
+                     const base::Closure& error_callback) = 0;
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_READER_H_