Brushed up listen socket:

chrome/browser/debugger/devtools_remote.h

 // Copyright (c) 2009 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 CHROME_BROWSER_DEBUGGER_DEVTOOLS_REMOTE_H_
 #define CHROME_BROWSER_DEBUGGER_DEVTOOLS_REMOTE_H_
 
 #include "base/basictypes.h"
 #include "base/ref_counted.h"
 
 class DevToolsRemoteMessage;
+class ListenSocket;
 
 // This interface should be implemented by a class that wants to handle
 // DevToolsRemoteMessages dispatched by some entity. It must extend
 class DevToolsRemoteListener
     : public base::RefCountedThreadSafe<DevToolsRemoteListener> {
  public:
   DevToolsRemoteListener() {}
   virtual void HandleMessage(const DevToolsRemoteMessage& message) = 0;
   // This method is invoked on the UI thread whenever the debugger connection
   // has been lost.
   virtual void OnConnectionLost() = 0;
+  virtual void OnAcceptConnection(ListenSocket* connection) {}
 
  protected:
   friend class base::RefCountedThreadSafe<DevToolsRemoteListener>;
 
   virtual ~DevToolsRemoteListener() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DevToolsRemoteListener);
 };
 
 // Interface exposed by DevToolsProtocolHandler to receive reply messages
 // from registered tools.
 class OutboundSocketDelegate {
  public:
   virtual ~OutboundSocketDelegate() {}
   virtual void Send(const DevToolsRemoteMessage& message) = 0;
 };
 
 #endif  // CHROME_BROWSER_DEBUGGER_DEVTOOLS_REMOTE_H_