IDBObserver: Lifetime Management: Adding Observer

third_party/WebKit/public/platform/modules/indexeddb/WebIDBObserver.h

Index: third_party/WebKit/public/platform/modules/indexeddb/WebIDBObserver.h
diff --git a/third_party/WebKit/public/platform/modules/indexeddb/WebIDBObserver.h b/third_party/WebKit/public/platform/modules/indexeddb/WebIDBObserver.h
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index 0000000000000000000000000000000000000000..47f5423f6d9567024b231a19092b094605862528
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+++ b/third_party/WebKit/public/platform/modules/indexeddb/WebIDBObserver.h
@@ -0,0 +1,29 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WebIDBObserver_h
+#define WebIDBObserver_h
+
+#include "public/platform/WebPrivatePtr.h"
+
+namespace blink {
+
+class IDBObserver;
+
+class WebIDBObserver {
+public:
+    BLINK_EXPORT virtual ~WebIDBObserver();
+    WebIDBObserver() {}
+
+#if INSIDE_BLINK
+    WebIDBObserver(IDBObserver*);
+#endif
+
+private:
+    WebPrivatePtr<IDBObserver, WebPrivatePtrDestructionCrossThread> m_observer;
+};
+
+} // namespace blink
+
+#endif // WebIDBObserver_h