Extract simpler classes for observing context lifecycle and observe Page lifecycle inNavigatorVibra…

Source/core/dom/ContextLifecycleNotifier.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * 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
@@ skipping 10 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 #ifndef ContextLifecycleNotifier_h
 #define ContextLifecycleNotifier_h
 
 #include "core/dom/ActiveDOMObject.h"
+#include "core/dom/SimpleLifecycleNotifier.h"
 #include "wtf/HashSet.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WTF {
 class MemoryObjectInfo;
 }
 
 namespace WebCore {
 
 class ActiveDOMObject;
 class ContextLifecycleObserver;
 class ScriptExecutionContext;
 
-class ContextLifecycleNotifier {
+class ContextLifecycleNotifier : public SimpleLifecycleNotifier {
 public:
     static PassOwnPtr<ContextLifecycleNotifier> create(ScriptExecutionContext*);
 
     virtual ~ContextLifecycleNotifier();
 
-    typedef HashSet<ContextLifecycleObserver*> ContextObserverSet;
     typedef HashSet<ActiveDOMObject*> ActiveDOMObjectSet;
 
     const ActiveDOMObjectSet& activeDOMObjects() const { return m_activeDOMObjects; }
 
-    virtual void addObserver(ContextLifecycleObserver*, ContextLifecycleObserver::Type as);
-    virtual void removeObserver(ContextLifecycleObserver*, ContextLifecycleObserver::Type as);
+    virtual void addObserver(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type) OVERRIDE;
+    virtual void removeObserver(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type) OVERRIDE;
 
     void notifyResumingActiveDOMObjects();
     void notifySuspendingActiveDOMObjects(ActiveDOMObject::ReasonForSuspension);
     void notifyStoppingActiveDOMObjects();
 
     bool contains(ActiveDOMObject* object) const { return m_activeDOMObjects.contains(object); }
     bool canSuspendActiveDOMObjects();
     bool hasPendingActivity() const;
 
     void reportMemoryUsage(WTF::MemoryObjectInfo*) const;
 
 protected:
     explicit ContextLifecycleNotifier(ScriptExecutionContext*);
 
-    enum IterationType {
-        IteratingNone,
-        IteratingOverActiveDOMObjects,
-        IteratingOverContextObservers,
-        IteratingOverDocumentObservers
-    };
-
-    IterationType m_iterating;
-
 private:
-    ScriptExecutionContext* m_context;
-    ContextObserverSet m_contextObservers;
     ActiveDOMObjectSet m_activeDOMObjects;
-    bool m_inDestructor;
 };
 
 inline PassOwnPtr<ContextLifecycleNotifier> ContextLifecycleNotifier::create(ScriptExecutionContext* context)
 {
     return adoptPtr(new ContextLifecycleNotifier(context));
 }
 
 } // namespace WebCore
 
 #endif // ContextLifecycleNotifier_h
-