Revert of Remove support for legacy WebKit Notifications

Source/web/NotificationPresenterImpl.h

Index: Source/web/NotificationPresenterImpl.h
diff --git a/Source/web/NotificationPresenterImpl.h b/Source/web/NotificationPresenterImpl.h
index a4fb0454d403efc054638c14fe46fed3b7d0b267..085dea56cfa30f376c36e306b38a397489edea74 100644
--- a/Source/web/NotificationPresenterImpl.h
+++ b/Source/web/NotificationPresenterImpl.h
@@ -49,10 +49,13 @@
     bool isInitialized();
 
     // WebCore::NotificationPresenter implementation.
-    virtual bool show(WebCore::Notification*) OVERRIDE;
-    virtual void cancel(WebCore::Notification*) OVERRIDE;
-    virtual void notificationObjectDestroyed(WebCore::Notification*) OVERRIDE;
+    virtual bool show(WebCore::NotificationBase*) OVERRIDE;
+    virtual void cancel(WebCore::NotificationBase*) OVERRIDE;
+    virtual void notificationObjectDestroyed(WebCore::NotificationBase*) OVERRIDE;
     virtual WebCore::NotificationClient::Permission checkPermission(WebCore::ExecutionContext*) OVERRIDE;
+#if ENABLE(LEGACY_NOTIFICATIONS)
+    virtual void requestPermission(WebCore::ExecutionContext*, WTF::PassOwnPtr<WebCore::VoidCallback>) OVERRIDE;
+#endif
     virtual void requestPermission(WebCore::ExecutionContext*, WTF::PassOwnPtr<WebCore::NotificationPermissionCallback>) OVERRIDE;
 
 private: