Use ClientAuthenticationConfig in PairingClientAuthenticator

remoting/protocol/client_authentication_config.h

Index: remoting/protocol/client_authentication_config.h
diff --git a/remoting/protocol/client_authentication_config.h b/remoting/protocol/client_authentication_config.h
new file mode 100644
index 0000000000000000000000000000000000000000..92a1cb7697b7b5a0d769e38c68d29687cf29e671
--- /dev/null
+++ b/remoting/protocol/client_authentication_config.h
@@ -0,0 +1,62 @@
+// 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_PROTOCOL_CLIENT_AUTHENTICATION_CONFIG_H_
+#define REMOTING_PROTOCOL_CLIENT_AUTHENTICATION_CONFIG_H_
+
+#include <string>
+
+#include "base/callback.h"
+
+namespace remoting {
+namespace protocol {
+
+typedef base::Callback<void(const std::string& secret)> SecretFetchedCallback;
+typedef base::Callback<void(
+    bool pairing_supported,
+    const SecretFetchedCallback& secret_fetched_callback)> FetchSecretCallback;
+
+// Callback passed to |FetchTokenCallback|, and called once the client
+// authentication finishes. |token| is an opaque string that should be sent
+// directly to the host. |shared_secret| should be used by the client to
+// create a V2Authenticator. In case of failure, the callback is called with
+// an empty |token| and |shared_secret|.
+typedef base::Callback<void(const std::string& token,
+                            const std::string& shared_secret)>
+    ThirdPartyTokenFetchedCallback;
+
+// Fetches a third party token from |token_url|. |host_public_key| is sent to
+// the server so it can later authenticate the host. |scope| is a string with a
+// space-separated list of attributes for this connection (e.g.
+// "hostjid:abc@example.com/123 clientjid:def@example.org/456".
+// |token_fetched_callback| is called when the client authentication ends, on
+// the same thread on which FetchThirdPartyTokenCallback was originally called.
+typedef base::Callback<void(
+    const std::string& token_url,
+    const std::string& scope,
+    const ThirdPartyTokenFetchedCallback& token_fetched_callback)>
+    FetchThirdPartyTokenCallback;
+
+struct ClientAuthenticationConfig {
+  ClientAuthenticationConfig();
+  ~ClientAuthenticationConfig();
+
+  // Used for all authenticators.
+  std::string host_id;
+
+  // Used for pairing authenticators
+  std::string pairing_client_id;
+  std::string pairing_secret;
+
+  // Used for shared secret authenticators.
+  FetchSecretCallback fetch_secret_callback;
+
+  // Used for third party authenticators.
+  FetchThirdPartyTokenCallback fetch_third_party_token_callback;
+};
+
+}  // namespace protocol
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_CLIENT_AUTHENTICATION_CONFIG_H_