Upstream changes making ListenSocket an abstract class.

net/tools/fetch/http_listen_socket.h

Index: net/tools/fetch/http_listen_socket.h
diff --git a/net/tools/fetch/http_listen_socket.h b/net/tools/fetch/http_listen_socket.h
index 18e3a466ffdb20e636bd27b9c5ad4a5be95b7edb..9fbffc53587f7afbea276787378a2d9e3ca54a4a 100644
--- a/net/tools/fetch/http_listen_socket.h
+++ b/net/tools/fetch/http_listen_socket.h
@@ -7,13 +7,13 @@
 #pragma once
 
 #include "base/message_loop.h"
-#include "net/base/listen_socket.h"
+#include "net/base/tcp_listen_socket.h"
 
 class HttpServerRequestInfo;
 class HttpServerResponseInfo;
 
 // Implements a simple HTTP listen socket on top of the raw socket interface.
-class HttpListenSocket : public net::ListenSocket,
+class HttpListenSocket : public net::TCPListenSocket,
                          public net::ListenSocket::ListenSocketDelegate {
  public:
   class Delegate {