LibWeb: Implement HTMLTrackElement.readyState

Author: https://github.com/jamierocks
Commit: 1d12cb69d4
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/977
Reviewed-by: https://github.com/tcl3 ✅

Userland/Libraries/LibWeb/HTML/HTMLTrackElement.h

@@ -19,6 +19,8 @@ class HTMLTrackElement final : public HTMLElement {
 public:
     virtual ~HTMLTrackElement() override;
 
+    WebIDL::UnsignedShort ready_state();
+
     JS::Handle<TextTrack> track() { return m_track; }
 
 private: