Revert of Remove support for legacy WebKit Notifications

Source/modules/notifications/WorkerGlobalScopeNotifications.h

Index: Source/modules/notifications/WorkerGlobalScopeNotifications.h
diff --git a/Source/modules/notifications/WorkerGlobalScopeNotifications.h b/Source/modules/notifications/WorkerGlobalScopeNotifications.h
new file mode 100644
index 0000000000000000000000000000000000000000..d62d35887a0876ac7400714dfeb7fdb3d85885a1
--- /dev/null
+++ b/Source/modules/notifications/WorkerGlobalScopeNotifications.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2008, 2009 Apple 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
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * 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 WorkerGlobalScopeNotifications_h
+#define WorkerGlobalScopeNotifications_h
+
+#if ENABLE(LEGACY_NOTIFICATIONS)
+
+#include "core/workers/WorkerSupplementable.h"
+#include "heap/Handle.h"
+
+namespace WebCore {
+
+class NotificationCenter;
+class ExecutionContext;
+class WorkerGlobalScope;
+
+class WorkerGlobalScopeNotifications FINAL : public WorkerSupplement {
+public:
+    virtual ~WorkerGlobalScopeNotifications();
+
+    static NotificationCenter* webkitNotifications(WorkerGlobalScope&);
+    static WorkerGlobalScopeNotifications& from(WorkerGlobalScope&);
+
+private:
+    explicit WorkerGlobalScopeNotifications(WorkerGlobalScope&);
+
+    NotificationCenter* webkitNotifications();
+    static const char* supplementName();
+
+    WorkerGlobalScope& m_context;
+    RefPtrWillBePersistent<NotificationCenter> m_notificationCenter;
+};
+
+} // namespace WebCore
+
+#endif // WorkerGlobalScopeNotifications_h
+
+#endif // ENABLE(LEGACY_NOTIFICATIONS)