Update GnubbyAuthHandler to use the current session ID

remoting/host/security_key/fake_remote_security_key_ipc_client.h

Index: remoting/host/security_key/fake_remote_security_key_ipc_client.h
diff --git a/remoting/host/security_key/fake_remote_security_key_ipc_client.h b/remoting/host/security_key/fake_remote_security_key_ipc_client.h
index adf10db01bea48cccd96debbc54cc60f187cfc79..d08ce7b34379ca6e0f1f9f3bb42c3d798ed39c6c 100644
--- a/remoting/host/security_key/fake_remote_security_key_ipc_client.h
+++ b/remoting/host/security_key/fake_remote_security_key_ipc_client.h
@@ -52,6 +52,8 @@ class FakeRemoteSecurityKeyIpcClient : public RemoteSecurityKeyIpcClient {
     return last_message_received_;
   }
 
+  bool ipc_channel_connected() { return ipc_channel_connected_; }
+
   void set_wait_for_ipc_channel_return_value(bool return_value) {
     wait_for_ipc_channel_return_value_ = return_value;
   }
@@ -99,6 +101,9 @@ class FakeRemoteSecurityKeyIpcClient : public RemoteSecurityKeyIpcClient {
   // Value returned by WaitForSecurityKeyIpcServerChannel() method.
   bool wait_for_ipc_channel_return_value_ = true;
 
+  // Stores whether a connection to the server IPC channel is active.
+  bool ipc_channel_connected_ = false;
+
   // Value returned by SendSecurityKeyRequest() method.
   std::string security_key_response_payload_;