ServiceWorker: Remove navigator.serviceWorker.{installing,waiting,active} (Blink)

Source/modules/serviceworkers/ServiceWorkerContainer.idl

Index: Source/modules/serviceworkers/ServiceWorkerContainer.idl
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainer.idl b/Source/modules/serviceworkers/ServiceWorkerContainer.idl
index d34dd91ea6daea1234c1b89ac36ff5ea25902462..a6cb548c3509ad5bb0713e6b99a62a08c0a24f88 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainer.idl
+++ b/Source/modules/serviceworkers/ServiceWorkerContainer.idl
@@ -33,11 +33,7 @@
     RuntimeEnabled=ServiceWorker,
     GarbageCollected
 ] interface ServiceWorkerContainer {
-    [Unforgeable] readonly attribute ServiceWorker? installing;
-    [Unforgeable] readonly attribute ServiceWorker? waiting;
-    [Unforgeable] readonly attribute ServiceWorker? active;
     [Unforgeable] readonly attribute ServiceWorker? controller;
-
     [CallWith=ScriptState] readonly attribute Promise ready;
 
     [CallWith=ScriptState, ImplementedAs=registerServiceWorker] Promise register(ScalarValueString url, optional Dictionary options);