Remove support for the keygen tag

third_party/WebKit/Source/core/html/HTMLKeygenElement.idl

Index: third_party/WebKit/Source/core/html/HTMLKeygenElement.idl
diff --git a/third_party/WebKit/Source/core/html/HTMLKeygenElement.idl b/third_party/WebKit/Source/core/html/HTMLKeygenElement.idl
deleted file mode 100644
index 4b0b21d90227006b60b6a7311c33e1bcc3cc3349..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/html/HTMLKeygenElement.idl
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2011 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-// https://html.spec.whatwg.org/#the-keygen-element
-
-interface HTMLKeygenElement : HTMLElement {
-    [CEReactions, Reflect] attribute boolean autofocus;
-    [CEReactions, Reflect] attribute DOMString challenge;
-    [CEReactions, Reflect] attribute boolean disabled;
-    [ImplementedAs=formOwner] readonly attribute HTMLFormElement? form;
-    [CEReactions, Reflect, ReflectOnly="rsa", ReflectMissing="rsa"] attribute DOMString keytype;
-    [CEReactions, Reflect] attribute DOMString name;
-
-    readonly attribute DOMString type;
-
-    readonly attribute boolean willValidate;
-    readonly attribute ValidityState validity;
-    readonly attribute DOMString validationMessage;
-    boolean checkValidity();
-    boolean reportValidity();
-    void setCustomValidity(DOMString error);
-
-    readonly attribute NodeList labels;
-};