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

Source/core/dom/DocumentLifecycleObserver.h

Index: Source/core/dom/DocumentLifecycleObserver.h
diff --git a/Source/core/dom/DocumentLifecycleObserver.h b/Source/core/dom/DocumentLifecycleObserver.h
index 47a449fc4f598388c8c30cccb0c8b448d4990103..3732b1aca557d6489d0c981defeb13e364f8c095 100644
--- a/Source/core/dom/DocumentLifecycleObserver.h
+++ b/Source/core/dom/DocumentLifecycleObserver.h
@@ -44,15 +44,15 @@ public:
     virtual void documentWasDisposed() { }
 };
 
-class DocumentLifecycleNotifier  : public ContextLifecycleNotifier {
+class DocumentLifecycleNotifier : public ContextLifecycleNotifier {
 public:
     static PassOwnPtr<DocumentLifecycleNotifier> create(ScriptExecutionContext*);
 
     void notifyDocumentWasDetached();
     void notifyDocumentWasDisposed();
 
-    virtual void addObserver(ContextLifecycleObserver*, ContextLifecycleObserver::Type as) OVERRIDE;
-    virtual void removeObserver(ContextLifecycleObserver*, ContextLifecycleObserver::Type as) OVERRIDE;
+    virtual void addObserver(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type) OVERRIDE;
+    virtual void removeObserver(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type) OVERRIDE;
 
 private:
     explicit DocumentLifecycleNotifier(ScriptExecutionContext*);