Update GnubbyAuthHandler to use the current session ID

remoting/host/security_key/gnubby_extension_session.h

 // 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_GNUBBY_EXTENSION_SESSION_H_
 #define REMOTING_HOST_SECURITY_KEY_GNUBBY_EXTENSION_SESSION_H_
 
+#include <cstdint>
 #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 GnubbyAuthHandler;
 
 namespace protocol {
 class ClientStub;
 }
 
 // A HostExtensionSession implementation that enables Security Key support.
 class GnubbyExtensionSession : public HostExtensionSession {
  public:
-  explicit GnubbyExtensionSession(protocol::ClientStub* client_stub);
+  GnubbyExtensionSession(ClientSessionDetails* client_session_details,
+                         protocol::ClientStub* client_stub);
   ~GnubbyExtensionSession() override;
 
   // HostExtensionSession interface.
   bool OnExtensionMessage(ClientSessionDetails* client_session_details,
                           protocol::ClientStub* client_stub,
                           const protocol::ExtensionMessage& message) override;
 
   // Allows the underlying GnubbyAuthHandler to be overridden for unit testing.
   void SetGnubbyAuthHandlerForTesting(
       std::unique_ptr<GnubbyAuthHandler> gnubby_auth_handler);
 
  private:
   // These methods process specific gnubby 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;
 
+  uint32_t GetDesktopSessionId() const;
+
   // Ensures GnubbyExtensionSession 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;
 
+  // Interface which provides details about the client session.
+  ClientSessionDetails* client_session_details_ = nullptr;
+
   // Handles platform specific gnubby operations.
   std::unique_ptr<GnubbyAuthHandler> gnubby_auth_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(GnubbyExtensionSession);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SECURITY_KEY_GNUBBY_EXTENSION_SESSION_H_