--- a/src/java.base/share/classes/sun/security/ssl/ExtensionType.java	Fri May 11 14:55:56 2018 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,115 +0,0 @@
-/*
- * Copyright (c) 2006, 2017, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.security.ssl;
-
-import java.util.ArrayList;
-import java.util.List;
-
-final class ExtensionType {
-
-    final int id;
-    final String name;
-
-    private ExtensionType(int id, String name) {
-        this.id = id;
-        this.name = name;
-    }
-
-    @Override
-    public String toString() {
-        return name;
-    }
-
-    static List<ExtensionType> knownExtensions = new ArrayList<>(16);
-
-    static ExtensionType get(int id) {
-        for (ExtensionType ext : knownExtensions) {
-            if (ext.id == id) {
-                return ext;
-            }
-        }
-        return new ExtensionType(id, "type_" + id);
-    }
-
-    private static ExtensionType e(int id, String name) {
-        ExtensionType ext = new ExtensionType(id, name);
-        knownExtensions.add(ext);
-        return ext;
-    }
-
-    // extensions defined in RFC 3546
-    static final ExtensionType EXT_SERVER_NAME =
-            e(0x0000, "server_name");            // IANA registry value: 0
-    static final ExtensionType EXT_MAX_FRAGMENT_LENGTH =
-            e(0x0001, "max_fragment_length");    // IANA registry value: 1
-    static final ExtensionType EXT_CLIENT_CERTIFICATE_URL =
-            e(0x0002, "client_certificate_url"); // IANA registry value: 2
-    static final ExtensionType EXT_TRUSTED_CA_KEYS =
-            e(0x0003, "trusted_ca_keys");        // IANA registry value: 3
-    static final ExtensionType EXT_TRUNCATED_HMAC =
-            e(0x0004, "truncated_hmac");         // IANA registry value: 4
-    static final ExtensionType EXT_STATUS_REQUEST =
-            e(0x0005, "status_request");         // IANA registry value: 5
-
-    // extensions defined in RFC 4681
-    static final ExtensionType EXT_USER_MAPPING =
-            e(0x0006, "user_mapping");           // IANA registry value: 6
-
-    // extensions defined in RFC 5081
-    static final ExtensionType EXT_CERT_TYPE =
-            e(0x0009, "cert_type");              // IANA registry value: 9
-
-    // extensions defined in RFC 4492 (ECC) and RFC 7919 (FFDHE)
-    static final ExtensionType EXT_SUPPORTED_GROUPS =
-            e(0x000A, "supported_groups");       // IANA registry value: 10
-    static final ExtensionType EXT_EC_POINT_FORMATS =
-            e(0x000B, "ec_point_formats");       // IANA registry value: 11
-
-    // extensions defined in RFC 5054
-    static final ExtensionType EXT_SRP =
-            e(0x000C, "srp");                    // IANA registry value: 12
-
-    // extensions defined in RFC 5246
-    static final ExtensionType EXT_SIGNATURE_ALGORITHMS =
-            e(0x000D, "signature_algorithms");   // IANA registry value: 13
-
-    // extension defined in RFC 7301 (ALPN)
-    static final ExtensionType EXT_ALPN =
-            e(0x0010, "application_layer_protocol_negotiation");
-                                                 // IANA registry value: 16
-
-    // extensions defined in RFC 6961
-    static final ExtensionType EXT_STATUS_REQUEST_V2 =
-            e(0x0011, "status_request_v2");      // IANA registry value: 17
-
-    // extensions defined in RFC 7627
-    static final ExtensionType EXT_EXTENDED_MASTER_SECRET =
-            e(0x0017, "extended_master_secret"); // IANA registry value: 23
-
-    // extensions defined in RFC 5746
-    static final ExtensionType EXT_RENEGOTIATION_INFO =
-            e(0xff01, "renegotiation_info");     // IANA registry value: 65281
-}