Remove SSL 2.0 support.

R=agl
BUG=53659
TEST=none
Review URL: http://codereview.chromium.org/4091005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@67722 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/net/socket/ssl_client_socket_nss.cc b/net/socket/ssl_client_socket_nss.cc
index b9c6dff..fff4352 100644
--- a/net/socket/ssl_client_socket_nss.cc
+++ b/net/socket/ssl_client_socket_nss.cc
@@ -685,19 +685,14 @@
     return ERR_UNEXPECTED;
   }
 
-  rv = SSL_OptionSet(nss_fd_, SSL_ENABLE_SSL2, ssl_config_.ssl2_enabled);
+  rv = SSL_OptionSet(nss_fd_, SSL_ENABLE_SSL2, PR_FALSE);
   if (rv != SECSuccess) {
     LogFailedNSSFunction(net_log_, "SSL_OptionSet", "SSL_ENABLE_SSL2");
     return ERR_UNEXPECTED;
   }
 
-  // SNI is enabled automatically if TLS is enabled -- as long as
-  // SSL_V2_COMPATIBLE_HELLO isn't.
-  // So don't do V2 compatible hellos unless we're really using SSL2,
-  // to avoid errors like
-  // "common name `mail.google.com' != requested host name `gmail.com'"
-  rv = SSL_OptionSet(nss_fd_, SSL_V2_COMPATIBLE_HELLO,
-                     ssl_config_.ssl2_enabled);
+  // Don't do V2 compatible hellos because they don't support TLS extensions.
+  rv = SSL_OptionSet(nss_fd_, SSL_V2_COMPATIBLE_HELLO, PR_FALSE);
   if (rv != SECSuccess) {
     LogFailedNSSFunction(net_log_, "SSL_OptionSet", "SSL_V2_COMPATIBLE_HELLO");
     return ERR_UNEXPECTED;