Bug 1603160 - Allow MediaQueryList::AddListener to receive untrusted …

…events. r=bzbarsky

I was looking into MediaQueryList tests in the context of:

  w3c/csswg-drafts#4531

And this seemed reasonably easy to fix.

I don't see anything in:

  https://drafts.csswg.org/cssom-view/#dom-mediaquerylist-addlistener

Which doesn't mention anything about untrusted listeners.

I haven't investigated the remaining failure, it seems we call the capture
listener after the regular one...

Differential Revision: https://phabricator.services.mozilla.com/D56771

UltraBlame original commit: 1941e31f3d21880bb2c073e0247a041e7cbf00e3

layout/style/MediaQueryList.cpp

@@ -454,7 +454,12 @@ AddEventListener
 ONCHANGE_STRING
 aListener
 options
-false
+Nullable
+<
+bool
+>
+(
+)
 aRv
 )
 ;

testing/web-platform/meta/css/cssom-view/MediaQueryList-extends-EventTarget-interop.html.ini

@@ -0,0 +1,27 @@
+[
+MediaQueryList
+-
+extends
+-
+EventTarget
+-
+interop
+.
+html
+]
+[
+listeners
+are
+called
+in
+order
+they
+were
+added
+ignoring
+capture
+parameter
+]
+expected
+:
+FAIL