LifecycleObserver::contextDestroyed should be explicitly dispatched promptly when a context is dest…

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 170bd8ed07e092c6d043f440aad3382d4289cce8..bf58a4aa0f8bbfab29ad6ffbe7fb7ced52f3f816 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -2215,6 +2215,9 @@ void Document::detach(const AttachContext& context)
     // destruction.
     clearDOMWindow();
 #endif
+
+    LifecycleContext<Document>::contextDestroyed();
+    ExecutionContext::contextDestroyed();
 }
 
 void Document::prepareForDestruction()