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diff --git a/third_party/libjingle/source/talk/base/asyncsocket.h b/third_party/libjingle/source/talk/base/asyncsocket.h
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+++ b/third_party/libjingle/source/talk/base/asyncsocket.h
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+/*
+ * libjingle
+ * Copyright 2004--2005, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice, 
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TALK_BASE_ASYNCSOCKET_H_
+#define TALK_BASE_ASYNCSOCKET_H_
+
+#include "talk/base/common.h"
+#include "talk/base/sigslot.h"
+#include "talk/base/socket.h"
+
+namespace talk_base {
+
+// TODO(juberti): Remove Socket and rename AsyncSocket to Socket.
+
+// Provides the ability to perform socket I/O asynchronously.
+class AsyncSocket : public Socket {
+ public:
+  virtual AsyncSocket* Accept(SocketAddress* paddr) = 0;
+
+  sigslot::signal1<AsyncSocket*> SignalReadEvent;        // ready to read
+  sigslot::signal1<AsyncSocket*> SignalWriteEvent;       // ready to write
+  sigslot::signal1<AsyncSocket*> SignalConnectEvent;     // connected
+  sigslot::signal2<AsyncSocket*, int> SignalCloseEvent;  // closed
+};
+
+class AsyncSocketAdapter : public AsyncSocket, public sigslot::has_slots<> {
+ public:
+  // The adapted socket may explicitly be NULL, and later assigned using Attach.
+  // However, subclasses which support detached mode must override any methods
+  // that will be called during the detached period (usually GetState()), to
+  // avoid dereferencing a null pointer.
+  explicit AsyncSocketAdapter(AsyncSocket* socket) : socket_(NULL) {
+    Attach(socket);
+  }
+  virtual ~AsyncSocketAdapter() {
+    delete socket_;
+  }
+  void Attach(AsyncSocket* socket) {
+    ASSERT(!socket_);
+    socket_ = socket;
+    if (socket_) {
+      socket_->SignalConnectEvent.connect(this,
+          &AsyncSocketAdapter::OnConnectEvent);
+      socket_->SignalReadEvent.connect(this,
+          &AsyncSocketAdapter::OnReadEvent);
+      socket_->SignalWriteEvent.connect(this,
+          &AsyncSocketAdapter::OnWriteEvent);
+      socket_->SignalCloseEvent.connect(this,
+          &AsyncSocketAdapter::OnCloseEvent);
+    }
+  }
+  virtual SocketAddress GetLocalAddress() const {
+    return socket_->GetLocalAddress();
+  }
+  virtual SocketAddress GetRemoteAddress() const {
+    return socket_->GetRemoteAddress();
+  }
+  virtual int Bind(const SocketAddress& addr) {
+    return socket_->Bind(addr);
+  }
+  virtual int Connect(const SocketAddress& addr) {
+    return socket_->Connect(addr);
+  }
+  virtual int Send(const void* pv, size_t cb) {
+    return socket_->Send(pv, cb);
+  }
+  virtual int SendTo(const void* pv, size_t cb, const SocketAddress& addr) {
+    return socket_->SendTo(pv, cb, addr);
+  }
+  virtual int Recv(void* pv, size_t cb) {
+    return socket_->Recv(pv, cb);
+  }
+  virtual int RecvFrom(void* pv, size_t cb, SocketAddress* paddr) {
+    return socket_->RecvFrom(pv, cb, paddr);
+  }
+  virtual int Listen(int backlog) {
+    return socket_->Listen(backlog);
+  }
+  virtual AsyncSocket* Accept(SocketAddress* paddr) {
+    return socket_->Accept(paddr);
+  }
+  virtual int Close() {
+    return socket_->Close();
+  }
+  virtual int GetError() const {
+    return socket_->GetError();
+  }
+  virtual void SetError(int error) {
+    return socket_->SetError(error);
+  }
+  virtual ConnState GetState() const {
+    return socket_->GetState();
+  }
+  virtual int EstimateMTU(uint16* mtu) {
+    return socket_->EstimateMTU(mtu);
+  }
+  virtual int GetOption(Option opt, int* value) {
+    return socket_->GetOption(opt, value);
+  }
+  virtual int SetOption(Option opt, int value) {
+    return socket_->SetOption(opt, value);
+  }
+
+ protected:
+  virtual void OnConnectEvent(AsyncSocket* socket) {
+    SignalConnectEvent(this);
+  }
+  virtual void OnReadEvent(AsyncSocket* socket) {
+    SignalReadEvent(this);
+  }
+  virtual void OnWriteEvent(AsyncSocket* socket) {
+    SignalWriteEvent(this);
+  }
+  virtual void OnCloseEvent(AsyncSocket* socket, int err) {
+    SignalCloseEvent(this, err);
+  }
+
+  AsyncSocket* socket_;
+};
+
+}  // namespace talk_base
+
+#endif  // TALK_BASE_ASYNCSOCKET_H_