Revert of Renaming Gnubby and RemoteSecurityKey files/classes/members

remoting/host/security_key/security_key_extension_session.h

Index: remoting/host/security_key/security_key_extension_session.h
diff --git a/remoting/host/security_key/security_key_extension_session.h b/remoting/host/security_key/security_key_extension_session.h
deleted file mode 100644
index ee467899a3d27496bdc063562811e08cd7239455..0000000000000000000000000000000000000000
--- a/remoting/host/security_key/security_key_extension_session.h
+++ /dev/null
@@ -1,67 +0,0 @@
-// 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_SECURITY_KEY_EXTENSION_SESSION_H_
-#define REMOTING_HOST_SECURITY_KEY_SECURITY_KEY_EXTENSION_SESSION_H_
-
-#include <memory>
-#include <string>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/threading/thread_checker.h"
-#include "remoting/host/host_extension_session.h"
-
-namespace base {
-class DictionaryValue;
-}
-
-namespace remoting {
-
-class ClientSessionDetails;
-class SecurityKeyAuthHandler;
-
-namespace protocol {
-class ClientStub;
-}
-
-// A HostExtensionSession implementation that enables Security Key support.
-class SecurityKeyExtensionSession : public HostExtensionSession {
- public:
-  SecurityKeyExtensionSession(ClientSessionDetails* client_session_details,
-                              protocol::ClientStub* client_stub);
-  ~SecurityKeyExtensionSession() override;
-
-  // HostExtensionSession interface.
-  bool OnExtensionMessage(ClientSessionDetails* client_session_details,
-                          protocol::ClientStub* client_stub,
-                          const protocol::ExtensionMessage& message) override;
-
-  // Allows overriding SecurityKeyAuthHandler for unit testing.
-  void SetSecurityKeyAuthHandlerForTesting(
-      std::unique_ptr<SecurityKeyAuthHandler> security_key_auth_handler);
-
- private:
-  // These methods process specific security key extension message types.
-  void ProcessControlMessage(base::DictionaryValue* message_data) const;
-  void ProcessDataMessage(base::DictionaryValue* message_data) const;
-  void ProcessErrorMessage(base::DictionaryValue* message_data) const;
-
-  void SendMessageToClient(int connection_id, const std::string& data) const;
-
-  // Ensures SecurityKeyExtensionSession methods are called on the same thread.
-  base::ThreadChecker thread_checker_;
-
-  // Interface through which messages can be sent to the client.
-  protocol::ClientStub* client_stub_ = nullptr;
-
-  // Handles platform specific security key operations.
-  std::unique_ptr<SecurityKeyAuthHandler> security_key_auth_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(SecurityKeyExtensionSession);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_SECURITY_KEY_SECURITY_KEY_EXTENSION_SESSION_H_