Bug 1597356 [wpt PR 20304] - Update interfaces/html.idl, a=testonly

Automatic update from web-platform-tests
Update interfaces/html.idl (#20304)

Source: https://github.com/tidoust/reffy-reports/blob/adea44d/ed/idl/html.idl
Build: https://travis-ci.org/tidoust/reffy-reports/builds/614299242
--

wpt-commits: de791ce15ebbacea695f3ee3aef4a64988f8bb70
wpt-pr: 20304

testing/web-platform/tests/interfaces/html.idl

@@ -1166,9 +1166,10 @@ dictionary SubmitEventInit : EventInit {
   HTMLElement? submitter = null;
 };
 
-[Exposed=Window,
- Constructor(DOMString type, optional FormDataEventInit eventInitDict = {})]
+[Exposed=Window]
 interface FormDataEvent : Event {
+  constructor(DOMString type, FormDataEventInit eventInitDict);
+
   readonly attribute FormData formData;
 };
 
@@ -2011,8 +2012,8 @@ interface mixin NavigatorLanguage {
 };
 
 interface mixin NavigatorContentUtils {
-  void registerProtocolHandler(DOMString scheme, USVString url, DOMString title);
-  void unregisterProtocolHandler(DOMString scheme, USVString url);
+  [SecureContext] void registerProtocolHandler(DOMString scheme, USVString url, DOMString title);
+  [SecureContext] void unregisterProtocolHandler(DOMString scheme, USVString url);
 };
 
 interface mixin NavigatorCookies {