Completely remove SSLv3 support.

net/socket/ssl_client_socket_nss.cc

 // 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.
 
 // This file includes code SSLClientSocketNSS::DoVerifyCertComplete() derived
 // from AuthCertificateCallback() in
 // mozilla/security/manager/ssl/src/nsNSSCallbacks.cpp.
 
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
@@ skipping 2042 matching lines @@
       channel_info.length == sizeof(channel_info) &&
       channel_info.cipherSuite) {
     nss_handshake_state_.ssl_connection_status |= channel_info.cipherSuite;
 
     nss_handshake_state_.ssl_connection_status |=
         (static_cast<int>(channel_info.compressionMethod) &
          SSL_CONNECTION_COMPRESSION_MASK) <<
         SSL_CONNECTION_COMPRESSION_SHIFT;
 
     int version = SSL_CONNECTION_VERSION_UNKNOWN;
-    if (channel_info.protocolVersion < SSL_LIBRARY_VERSION_3_0) {
-      // All versions less than SSL_LIBRARY_VERSION_3_0 are treated as SSL
-      // version 2.
-      version = SSL_CONNECTION_VERSION_SSL2;
-    } else if (channel_info.protocolVersion == SSL_LIBRARY_VERSION_3_0) {
-      version = SSL_CONNECTION_VERSION_SSL3;
-    } else if (channel_info.protocolVersion == SSL_LIBRARY_VERSION_TLS_1_0) {
+    if (channel_info.protocolVersion == SSL_LIBRARY_VERSION_TLS_1_0) {
       version = SSL_CONNECTION_VERSION_TLS1;
     } else if (channel_info.protocolVersion == SSL_LIBRARY_VERSION_TLS_1_1) {
       version = SSL_CONNECTION_VERSION_TLS1_1;
     } else if (channel_info.protocolVersion == SSL_LIBRARY_VERSION_TLS_1_2) {
       version = SSL_CONNECTION_VERSION_TLS1_2;
     }
+    DCHECK_NE(SSL_CONNECTION_VERSION_UNKNOWN, version);
     nss_handshake_state_.ssl_connection_status |=
         (version & SSL_CONNECTION_VERSION_MASK) <<
         SSL_CONNECTION_VERSION_SHIFT;
   }
 
   PRBool peer_supports_renego_ext;
   ok = SSL_HandshakeNegotiatedExtension(nss_fd_, ssl_renegotiation_info_xtn,
                                         &peer_supports_renego_ext);
   if (ok == SECSuccess) {
     if (!peer_supports_renego_ext) {
@@ skipping 822 matching lines @@
   // SSL tunnel through a proxy -- GetPeerName returns the proxy's address
   // rather than the destination server's address in that case.
   std::string peer_id = host_and_port_.ToString();
   // Append |ssl_session_cache_shard_| to the peer id. This is used to partition
   // the session cache for incognito mode.
   peer_id += "/" + ssl_session_cache_shard_;
   peer_id += "/";
   // Shard the session cache based on maximum protocol version. This causes
   // fallback connections to use a separate session cache.
   switch (ssl_config_.version_max) {
-    case SSL_PROTOCOL_VERSION_SSL3:
-      peer_id += "ssl3";
-      break;
     case SSL_PROTOCOL_VERSION_TLS1:
       peer_id += "tls1";
       break;
     case SSL_PROTOCOL_VERSION_TLS1_1:
       peer_id += "tls1.1";
       break;
     case SSL_PROTOCOL_VERSION_TLS1_2:
       peer_id += "tls1.2";
       break;
     default:
@@ skipping 275 matching lines @@
 scoped_refptr<X509Certificate>
 SSLClientSocketNSS::GetUnverifiedServerCertificateChain() const {
   return core_->state().server_cert.get();
 }
 
 ChannelIDService* SSLClientSocketNSS::GetChannelIDService() const {
   return channel_id_service_;
 }
 
 }  // namespace net