Remove support for the keygen tag

third_party/WebKit/LayoutTests/fast/dom/domstring-attribute-reflection-expected.txt

Index: third_party/WebKit/LayoutTests/fast/dom/domstring-attribute-reflection-expected.txt
diff --git a/third_party/WebKit/LayoutTests/fast/dom/domstring-attribute-reflection-expected.txt b/third_party/WebKit/LayoutTests/fast/dom/domstring-attribute-reflection-expected.txt
index 9dd588377d43cf0cd058f3ea80c09b91b809246c..fd9361f60c330357065bb6b76151aac8d28f37ae 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/domstring-attribute-reflection-expected.txt
+++ b/third_party/WebKit/LayoutTests/fast/dom/domstring-attribute-reflection-expected.txt
@@ -1,4 +1,3 @@
-CONSOLE WARNING: line 10: The <keygen> element is deprecated and will be removed in M57, around March 2017. See https://www.chromestatus.com/features/5716060992962560 for more details.
 Reflected DOMString attribute test for button/@name
 Initial value:
 PASS element.name is ""
@@ -149,36 +148,6 @@ PASS element.setAttribute("step", 456); element.step is "456"
 PASS element.getAttribute("step") is "456"
 
 
-Reflected DOMString attribute test for keygen/@name
-Initial value:
-PASS element.name is ""
-PASS element.getAttribute("name") is null
-Setting a value via the IDL attribute:
-PASS element.name = "foo"; element.name is "foo"
-PASS element.getAttribute("name") is "foo"
-Setting a value via the content attribute:
-PASS element.setAttribute("name", " bar\n"); element.name is " bar\n"
-PASS element.getAttribute("name") is " bar\n"
-Setting null via the IDL attribute:
-PASS element.name = null; element.name is "null"
-PASS element.getAttribute("name") is "null"
-Setting null via the content attribute:
-PASS element.setAttribute("name", null); element.name is "null"
-PASS element.getAttribute("name") is "null"
-Setting undefined via the IDL attribute:
-PASS element.name = undefined; element.name is "undefined"
-PASS element.getAttribute("name") is "undefined"
-Setting undefined via the content attribute:
-PASS element.setAttribute("name", undefined); element.name is "undefined"
-PASS element.getAttribute("name") is "undefined"
-Setting non-string via the IDL attribute:
-PASS element.name = 123; element.name is "123"
-PASS element.getAttribute("name") is "123"
-Setting non-string via the content attribute:
-PASS element.setAttribute("name", 456); element.name is "456"
-PASS element.getAttribute("name") is "456"
-
-
 Reflected DOMString attribute test for menu/@type
 Initial value:
 PASS element.type is ""