Revert of Replace StreamListenSocket with StreamSocket in HttpServer.

net/server/web_socket.h

 // Copyright (c) 2012 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 NET_SERVER_WEB_SOCKET_H_
 #define NET_SERVER_WEB_SOCKET_H_
 
 #include <string>
 
 #include "base/basictypes.h"
-#include "base/strings/string_piece.h"
 
 namespace net {
 
 class HttpConnection;
-class HttpServer;
 class HttpServerRequestInfo;
 
 class WebSocket {
  public:
   enum ParseResult {
     FRAME_OK,
     FRAME_INCOMPLETE,
     FRAME_CLOSE,
     FRAME_ERROR
   };
 
-  static WebSocket* CreateWebSocket(HttpServer* server,
-                                    HttpConnection* connection,
+  static WebSocket* CreateWebSocket(HttpConnection* connection,
                                     const HttpServerRequestInfo& request,
                                     size_t* pos);
 
-  static ParseResult DecodeFrameHybi17(const base::StringPiece& frame,
+  static ParseResult DecodeFrameHybi17(const std::string& frame,
                                        bool client_frame,
                                        int* bytes_consumed,
                                        std::string* output);
 
   static std::string EncodeFrameHybi17(const std::string& data,
                                        int masking_key);
 
   virtual void Accept(const HttpServerRequestInfo& request) = 0;
   virtual ParseResult Read(std::string* message) = 0;
   virtual void Send(const std::string& message) = 0;
   virtual ~WebSocket() {}
 
  protected:
-  WebSocket(HttpServer* server, HttpConnection* connection);
-
-  HttpServer* const server_;
-  HttpConnection* const connection_;
+  explicit WebSocket(HttpConnection* connection);
+  HttpConnection* connection_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SERVER_WEB_SOCKET_H_