Migrate the IndexedDB backend from Blink to Chromium

content/browser/indexed_db/indexed_db_cursor.h

+// Copyright (c) 2013 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
+#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
+
+#include "base/memory/ref_counted.h"
+#include "content/common/indexed_db/indexed_db_key.h"
+
+namespace content {
+
+class IndexedDBCallbacksWrapper;
+
+class IndexedDBCursor : public base::RefCounted<IndexedDBCursor> {
+ public:
+  virtual void Advance(unsigned long count,
+                       scoped_refptr<IndexedDBCallbacksWrapper> callbacks) = 0;
+  virtual void ContinueFunction(
+      scoped_ptr<IndexedDBKey> key,
+      scoped_refptr<IndexedDBCallbacksWrapper> callbacks) = 0;
+  virtual void DeleteFunction(
+      scoped_refptr<IndexedDBCallbacksWrapper> callbacks) = 0;
+  virtual void PrefetchContinue(
+      int number_to_fetch,
+      scoped_refptr<IndexedDBCallbacksWrapper> callbacks) = 0;
+  virtual void PrefetchReset(int used_prefetches, int unused_prefetches) = 0;
+  virtual void PostSuccessHandlerCallback() = 0;
+
+ protected:
+  virtual ~IndexedDBCursor() {}
+  friend class base::RefCounted<IndexedDBCursor>;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_