From 9cfb17ca5c0f7bbf65c40e4832e1628938b0aa6e Mon Sep 17 00:00:00 2001
From: Marco Castelluccio <mcastelluccio@mozilla.com>
Date: Fri, 13 Dec 2019 00:17:20 +0000
Subject: [PATCH] Bug 1603160 - Allow MediaQueryList::AddListener to receive
 untrusted events. r=bzbarsky

I was looking into MediaQueryList tests in the context of:

  https://github.com/w3c/csswg-drafts/issues/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               |  7 ++++-
 ...yList-extends-EventTarget-interop.html.ini | 27 +++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 testing/web-platform/meta/css/cssom-view/MediaQueryList-extends-EventTarget-interop.html.ini

diff --git a/layout/style/MediaQueryList.cpp b/layout/style/MediaQueryList.cpp
index b5207afce24ee..1a5e6bfdf34d8 100644
--- a/layout/style/MediaQueryList.cpp
+++ b/layout/style/MediaQueryList.cpp
@@ -325,7 +325,12 @@ AddEventListener
 ONCHANGE_STRING
 aListener
 options
-false
+Nullable
+<
+bool
+>
+(
+)
 aRv
 )
 ;
diff --git a/testing/web-platform/meta/css/cssom-view/MediaQueryList-extends-EventTarget-interop.html.ini b/testing/web-platform/meta/css/cssom-view/MediaQueryList-extends-EventTarget-interop.html.ini
new file mode 100644
index 0000000000000..a651ae930dbc6
--- /dev/null
+++ b/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