Add xmllite and xmpp sources to third_party/

third_party/xmpp/plainsaslhandler.h

Index: third_party/xmpp/plainsaslhandler.h
diff --git a/third_party/xmpp/plainsaslhandler.h b/third_party/xmpp/plainsaslhandler.h
new file mode 100644
index 0000000000000000000000000000000000000000..4c1f6a40733510b3201ef0e036cad101b797cc9d
--- /dev/null
+++ b/third_party/xmpp/plainsaslhandler.h
@@ -0,0 +1,58 @@
+// Copyright 2004 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 WEBRTC_LIBJINGLE_XMPP_PLAINSASLHANDLER_H_
+#define WEBRTC_LIBJINGLE_XMPP_PLAINSASLHANDLER_H_
+
+#include <algorithm>
+#include "third_party/xmpp/saslhandler.h"
+#include "third_party/xmpp/saslplainmechanism.h"
+#include "webrtc/base/cryptstring.h"
+
+namespace buzz {
+
+class PlainSaslHandler : public SaslHandler {
+public:
+  PlainSaslHandler(const Jid & jid, const rtc::CryptString & password,
+      bool allow_plain) : jid_(jid), password_(password),
+                          allow_plain_(allow_plain) {}
+
+  virtual ~PlainSaslHandler() {}
+
+  // Should pick the best method according to this handler
+  // returns the empty string if none are suitable
+  virtual std::string ChooseBestSaslMechanism(const std::vector<std::string> & mechanisms, bool encrypted) {
+
+    if (!encrypted && !allow_plain_) {
+      return "";
+    }
+
+    std::vector<std::string>::const_iterator it = std::find(mechanisms.begin(), mechanisms.end(), "PLAIN");
+    if (it == mechanisms.end()) {
+      return "";
+    }
+    else {
+      return "PLAIN";
+    }
+  }
+
+  // Creates a SaslMechanism for the given mechanism name (you own it
+  // once you get it).  If not handled, return NULL.
+  virtual SaslMechanism * CreateSaslMechanism(const std::string & mechanism) {
+    if (mechanism == "PLAIN") {
+      return new SaslPlainMechanism(jid_, password_);
+    }
+    return NULL;
+  }
+
+private:
+  Jid jid_;
+  rtc::CryptString password_;
+  bool allow_plain_;
+};
+
+
+}
+
+#endif  // WEBRTC_LIBJINGLE_XMPP_PLAINSASLHANDLER_H_