Revert "Extract ContextLifecycleNotifier from ScriptExecutionContext."

Source/core/dom/DocumentLifecycleObserver.cpp

 /*
  * Copyright (C) 2013 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 
 #include "config.h"
 #include "core/dom/DocumentLifecycleObserver.h"
 
 #include "core/dom/Document.h"
 
 namespace WebCore {
 
 DocumentLifecycleObserver::DocumentLifecycleObserver(Document* document)
-    : ContextDestructionObserver(document, DocumentLifecycleObserverType)
+    : ContextDestructionObserver(document)
 {
+    document->addLifecycleObserver(this);
 }
 
-DocumentLifecycleObserver::~DocumentLifecycleObserver()
+PassOwnPtr<DocumentLifecycleNotifier> DocumentLifecycleNotifier::create()
 {
-    observeContext(0, DocumentLifecycleObserverType);
+    return adoptPtr(new DocumentLifecycleNotifier());
 }
 
-DocumentLifecycleNotifier::DocumentLifecycleNotifier(ScriptExecutionContext* context)
-    : ContextLifecycleNotifier(context)
+void DocumentLifecycleNotifier::addObserver(DocumentLifecycleObserver* observer)
 {
-}
-
-void DocumentLifecycleNotifier::addObserver(ContextDestructionObserver* observer, ContextDestructionObserver::Type as)
-{
-    RELEASE_ASSERT(!m_iterating);
-    if (as == ContextDestructionObserver::DocumentLifecycleObserverType)
-        m_documentObservers.add(static_cast<DocumentLifecycleObserver*>(observer));
-    ContextLifecycleNotifier::addObserver(observer, as);
-}
-
-void DocumentLifecycleNotifier::removeObserver(ContextDestructionObserver* observer, ContextDestructionObserver::Type as)
-{
-    RELEASE_ASSERT(!m_iterating);
-    if (as == ContextDestructionObserver::DocumentLifecycleObserverType)
-        m_documentObservers.remove(static_cast<DocumentLifecycleObserver*>(observer));
-    ContextLifecycleNotifier::removeObserver(observer, as);
+    ASSERT(!m_iterating);
+    ASSERT(!m_observers.contains(observer));
+    m_observers.append(observer);
 }
 
 } // namespace WebCore