Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/xmpplogintask.h

Index: webrtc/libjingle/xmpp/xmpplogintask.h
diff --git a/webrtc/libjingle/xmpp/xmpplogintask.h b/webrtc/libjingle/xmpp/xmpplogintask.h
new file mode 100644
index 0000000000000000000000000000000000000000..c015c2e7a1c1feb06e93e6d0a1a37aaec9fbdc1f
--- /dev/null
+++ b/webrtc/libjingle/xmpp/xmpplogintask.h
@@ -0,0 +1,87 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_LIBJINGLE_XMPP_LOGINTASK_H_
+#define WEBRTC_LIBJINGLE_XMPP_LOGINTASK_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "webrtc/libjingle/xmpp/jid.h"
+#include "webrtc/libjingle/xmpp/xmppengine.h"
+#include "webrtc/base/logging.h"
+
+namespace buzz {
+
+class XmlElement;
+class XmppEngineImpl;
+class SaslMechanism;
+
+
+// TODO: Rename to LoginTask.
+class XmppLoginTask {
+
+public:
+  XmppLoginTask(XmppEngineImpl *pctx);
+  ~XmppLoginTask();
+
+  bool IsDone()
+    { return state_ == LOGINSTATE_DONE; }
+  void IncomingStanza(const XmlElement * element, bool isStart);
+  void OutgoingStanza(const XmlElement *element);
+  void set_allow_non_google_login(bool b)
+    { allowNonGoogleLogin_ = b; }
+
+private:
+  enum LoginTaskState {
+    LOGINSTATE_INIT = 0,
+    LOGINSTATE_STREAMSTART_SENT,
+    LOGINSTATE_STARTED_XMPP,
+    LOGINSTATE_TLS_INIT,
+    LOGINSTATE_AUTH_INIT,
+    LOGINSTATE_BIND_INIT,
+    LOGINSTATE_TLS_REQUESTED,
+    LOGINSTATE_SASL_RUNNING,
+    LOGINSTATE_BIND_REQUESTED,
+    LOGINSTATE_SESSION_REQUESTED,
+    LOGINSTATE_DONE,
+  };
+
+  const XmlElement * NextStanza();
+  bool Advance();
+  bool HandleStartStream(const XmlElement * element);
+  bool HandleFeatures(const XmlElement * element);
+  const XmlElement * GetFeature(const QName & name);
+  bool Failure(XmppEngine::Error reason);
+  void FlushQueuedStanzas();
+
+  XmppEngineImpl * pctx_;
+  bool authNeeded_;
+  bool allowNonGoogleLogin_;
+  LoginTaskState state_;
+  const XmlElement * pelStanza_;
+  bool isStart_;
+  std::string iqId_;
+  std::unique_ptr<XmlElement> pelFeatures_;
+  Jid fullJid_;
+  std::string streamId_;
+  std::unique_ptr<std::vector<XmlElement *> > pvecQueuedStanzas_;
+
+  std::unique_ptr<SaslMechanism> sasl_mech_;
+
+#if !defined(NDEBUG)
+  static const rtc::ConstantLabel LOGINTASK_STATES[];
+#endif
+};
+
+}
+
+#endif  //  WEBRTC_LIBJINGLE_XMPP_LOGINTASK_H_