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

webrtc/libjingle/xmpp/prexmppauth.h

Index: webrtc/libjingle/xmpp/prexmppauth.h
diff --git a/webrtc/libjingle/xmpp/prexmppauth.h b/webrtc/libjingle/xmpp/prexmppauth.h
new file mode 100644
index 0000000000000000000000000000000000000000..3a1e61064d72439fbc88728e22a6d2603e3eec8f
--- /dev/null
+++ b/webrtc/libjingle/xmpp/prexmppauth.h
@@ -0,0 +1,71 @@
+/*
+ *  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_PREXMPPAUTH_H_
+#define WEBRTC_LIBJINGLE_XMPP_PREXMPPAUTH_H_
+
+#include "webrtc/libjingle/xmpp/saslhandler.h"
+#include "webrtc/base/cryptstring.h"
+#include "webrtc/base/sigslot.h"
+
+namespace rtc {
+  class SocketAddress;
+}
+
+namespace buzz {
+
+class Jid;
+class SaslMechanism;
+
+class CaptchaChallenge {
+ public:
+  CaptchaChallenge() : captcha_needed_(false) {}
+  CaptchaChallenge(const std::string& token, const std::string& url)
+    : captcha_needed_(true), captcha_token_(token), captcha_image_url_(url) {
+  }
+
+  bool captcha_needed() const { return captcha_needed_; }
+  const std::string& captcha_token() const { return captcha_token_; }
+
+  // This url is relative to the gaia server.  Once we have better tools
+  // for cracking URLs, we should probably make this a full URL
+  const std::string& captcha_image_url() const { return captcha_image_url_; }
+
+ private:
+  bool captcha_needed_;
+  std::string captcha_token_;
+  std::string captcha_image_url_;
+};
+
+class PreXmppAuth : public SaslHandler {
+public:
+  virtual ~PreXmppAuth() {}
+
+  virtual void StartPreXmppAuth(
+    const Jid& jid,
+    const rtc::SocketAddress& server,
+    const rtc::CryptString& pass,
+    const std::string& auth_mechanism,
+    const std::string& auth_token) = 0;
+
+  sigslot::signal0<> SignalAuthDone;
+
+  virtual bool IsAuthDone() const = 0;
+  virtual bool IsAuthorized() const = 0;
+  virtual bool HadError() const = 0;
+  virtual int GetError() const = 0;
+  virtual CaptchaChallenge GetCaptchaChallenge() const = 0;
+  virtual std::string GetAuthMechanism() const = 0;
+  virtual std::string GetAuthToken() const = 0;
+};
+
+}
+
+#endif  // WEBRTC_LIBJINGLE_XMPP_PREXMPPAUTH_H_