Remove SPDY/2 code.

net/tools/flip_server/sm_connection.cc

 // 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.
 
 #include "net/tools/flip_server/sm_connection.h"
 
 #include <errno.h>
 #include <netinet/tcp.h>
 #include <sys/socket.h>
 #include <unistd.h>
@@ skipping 301 matching lines @@
   // If this is an SSL connection, check if NPN specifies SPDY.
   if (ssl_) {
     const unsigned char* npn_proto;
     unsigned int npn_proto_len;
     SSL_get0_next_proto_negotiated(ssl_, &npn_proto, &npn_proto_len);
     if (npn_proto_len > 0) {
       std::string npn_proto_str((const char*)npn_proto, npn_proto_len);
       VLOG(1) << log_prefix_ << ACCEPTOR_CLIENT_IDENT
               << "NPN protocol detected: " << npn_proto_str;
       if (!strncmp(reinterpret_cast<const char*>(npn_proto),
-                   "spdy/2",
-                   npn_proto_len)) {
-        *version_negotiated = SPDY2;
-        return true;
-      }
-      if (!strncmp(reinterpret_cast<const char*>(npn_proto),
                    "spdy/3",
                    npn_proto_len)) {
         *version_negotiated = SPDY3;
         return true;
       }
       if (!strncmp(reinterpret_cast<const char*>(npn_proto),
                    "spdy/4a2",
                    npn_proto_len)) {
         *version_negotiated = HTTP2;
         return true;
@@ skipping 320 matching lines @@
 SMConnection* SMConnection::NewSMConnection(EpollServer* epoll_server,
                                             SSLState* ssl_state,
                                             MemoryCache* memory_cache,
                                             FlipAcceptor* acceptor,
                                             std::string log_prefix) {
   return new SMConnection(
       epoll_server, ssl_state, memory_cache, acceptor, log_prefix);
 }
 
 }  // namespace net