LibWeb: Add WebSocket bindings

The WebSocket bindings match the original specification from the
WHATWG living standard, but do not match the later update of the
standard that involves FETCH. The FETCH update will be handled later
since the changes would also affect XMLHttpRequest.

1 files changed, 7 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/HTML/MessageEvent.idl b/Userland/Libraries/LibWeb/HTML/MessageEvent.idl
new file mode 100644
index 0000000000..25ff644fdd
--- /dev/null
+++ b/Userland/Libraries/LibWeb/HTML/MessageEvent.idl
@@ -0,0 +1,7 @@
+interface MessageEvent : Event {
+
+    // FIXME: This should be of type "any" instead of "USVString"
+    readonly attribute USVString data;
+    readonly attribute USVString origin;
+
+};