Remove support for the keygen tag

third_party/WebKit/LayoutTests/fast/forms/form-attribute.html

Index: third_party/WebKit/LayoutTests/fast/forms/form-attribute.html
diff --git a/third_party/WebKit/LayoutTests/fast/forms/form-attribute.html b/third_party/WebKit/LayoutTests/fast/forms/form-attribute.html
index d9fb65ad6b900e05d7ca3dc5c7de5e9e5bcf0afa..7fd29b07071a4870e1515824c0858256322c14f6 100644
--- a/third_party/WebKit/LayoutTests/fast/forms/form-attribute.html
+++ b/third_party/WebKit/LayoutTests/fast/forms/form-attribute.html
@@ -17,7 +17,6 @@ container.innerHTML = '<form id=owner></form>' +
     '<button name=victim form=owner />' +
     '<fieldset name=victim form=owner />' +
     '<input name=victim form=owner />' +
-    '<keygen name=victim form=owner />' +
     '<label name=victim form=owner></label>' +
     '<object name=victim form=owner></object>' +
     '<output name=victim form=owner />' +
@@ -28,7 +27,6 @@ var owner = document.getElementById('owner');
 shouldBe('document.getElementsByTagName("button")[0].form', 'owner');
 shouldBe('document.getElementsByTagName("fieldset")[0].form', 'owner');
 shouldBe('document.getElementsByTagName("input")[0].form', 'owner');
-shouldBe('document.getElementsByTagName("keygen")[0].form', 'owner');
 shouldBeNull('document.getElementsByTagName("label")[0].form');
 shouldBe('document.getElementsByTagName("object")[0].form', 'owner');
 shouldBe('document.getElementsByTagName("output")[0].form', 'owner');