namespace="EventTarget" ApplePaySession conditional=APPLE_PAY AudioNode conditional=WEB_AUDIO AudioContext conditional=WEB_AUDIO AudioTrackList conditional=VIDEO_TRACK DedicatedWorkerGlobalScope DOMApplicationCache DOMWindow EventSource FileReader FontFaceSet IDBDatabase conditional=INDEXED_DATABASE IDBOpenDBRequest conditional=INDEXED_DATABASE IDBRequest conditional=INDEXED_DATABASE IDBTransaction conditional=INDEXED_DATABASE MediaController conditional=VIDEO MediaKeySession conditional=ENCRYPTED_MEDIA MediaRemoteControls conditional=MEDIA_SESSION MediaSource conditional=MEDIA_SOURCE MediaStream conditional=MEDIA_STREAM MediaStreamTrack conditional=MEDIA_STREAM MessagePort Node Notification conditional=NOTIFICATIONS|LEGACY_NOTIFICATIONS Performance conditional=WEB_TIMING RTCDataChannel conditional=WEB_RTC RTCDTMFSender conditional=WEB_RTC RTCPeerConnection conditional=WEB_RTC SourceBuffer conditional=MEDIA_SOURCE SourceBufferList conditional=MEDIA_SOURCE SpeechSynthesisUtterance conditional=SPEECH_SYNTHESIS TextTrack conditional=VIDEO_TRACK TextTrackCue conditional=VIDEO_TRACK TextTrackList conditional=VIDEO_TRACK VideoTrackList conditional=VIDEO_TRACK WebKitMediaKeySession conditional=LEGACY_ENCRYPTED_MEDIA WebKitNamedFlow WebSocket conditional=WEB_SOCKETS Worker XMLHttpRequest XMLHttpRequestUpload