Adding <keygen> Content Setting (Blink)

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

Index: third_party/WebKit/Source/core/html/HTMLKeygenElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLKeygenElement.cpp b/third_party/WebKit/Source/core/html/HTMLKeygenElement.cpp
index a7eaec25442f22b924b0ac68a650a238583c2303..ad32aa12377933c4e0d6b27d707170a3f7208232 100644
--- a/third_party/WebKit/Source/core/html/HTMLKeygenElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLKeygenElement.cpp
@@ -35,6 +35,7 @@
 #include "core/html/HTMLOptionElement.h"
 #include "core/html/HTMLSelectElement.h"
 #include "core/layout/LayoutBlockFlow.h"
+#include "core/loader/FrameLoaderClient.h"
 #include "platform/text/PlatformLocale.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebLocalizedString.h"
@@ -61,6 +62,9 @@ PassRefPtrWillBeRawPtr<HTMLKeygenElement> HTMLKeygenElement::create(Document& do
 
 LayoutObject* HTMLKeygenElement::createLayoutObject(const ComputedStyle& style)
 {
+    if (!document().frame()->loader().client()->allowKeygen(true))
+        document().frame()->loader().client()->didNotAllowKeygen();
+
     // TODO(mstensho): While it's harmful and meaningless to allow most display types on replaced
     // content (e.g. table, table-row or flex), it would be useful to honor at least some of
     // them. Table-cell (and maybe table-caption too), for instance. See crbug.com/335040