Remove support for the keygen tag

third_party/WebKit/LayoutTests/fast/forms/willvalidate.html

Index: third_party/WebKit/LayoutTests/fast/forms/willvalidate.html
diff --git a/third_party/WebKit/LayoutTests/fast/forms/willvalidate.html b/third_party/WebKit/LayoutTests/fast/forms/willvalidate.html
index 64305604d762ee29e75709a3e86f5c7e6d066909..a4328feebc373a9ace45ec4cabb019326c71e2e8 100644
--- a/third_party/WebKit/LayoutTests/fast/forms/willvalidate.html
+++ b/third_party/WebKit/LayoutTests/fast/forms/willvalidate.html
@@ -21,7 +21,6 @@ parent.innerHTML = '<form>'
     + '<select name="victim"></select>'
     + '<output name="victim"></output>'
     + '<object name="victim"></object>'
-    + '<keygen name="victim">'
     + '</form>';
 var controls = document.getElementsByName('victim');
     for (var i = 0; i < controls.length; i++)
@@ -87,10 +86,6 @@ debug('Object element');
 parent.innerHTML = '<form><object></object></form>';
 shouldBeFalse('document.getElementsByTagName("object")[0].willValidate');
 
-debug('');
-debug('Keygen element');
-parent.innerHTML = '<form><keygen></form>';
-shouldBeFalse('document.getElementsByTagName("keygen")[0].willValidate');
 </script>
 </body>
 </html>