Revert "Migrate the IndexedDB backend from Blink to Chromium"

content/browser/indexed_db/indexed_db_cursor_impl.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_IMPL_H_
-#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_IMPL_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "content/browser/indexed_db/indexed_db_backing_store.h"
-#include "content/browser/indexed_db/indexed_db_cursor.h"
-#include "content/browser/indexed_db/indexed_db_database.h"
-#include "content/common/indexed_db/indexed_db_key_range.h"
-
-namespace content {
-
-class IndexedDBDatabaseImpl;
-class IndexedDBTransaction;
-
-class IndexedDBCursorImpl : public IndexedDBCursor {
- public:
-  static scoped_refptr<IndexedDBCursorImpl> Create(
-      scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
-      indexed_db::CursorType cursor_type,
-      IndexedDBTransaction* transaction,
-      int64 object_store_id) {
-    return make_scoped_refptr(
-        new IndexedDBCursorImpl(cursor.Pass(),
-                                cursor_type,
-                                IndexedDBDatabase::NORMAL_TASK,
-                                transaction,
-                                object_store_id));
-  }
-  static scoped_refptr<IndexedDBCursorImpl> Create(
-      scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
-      indexed_db::CursorType cursor_type,
-      IndexedDBDatabase::TaskType task_type,
-      IndexedDBTransaction* transaction,
-      int64 object_store_id) {
-    return make_scoped_refptr(new IndexedDBCursorImpl(
-        cursor.Pass(), cursor_type, task_type, transaction, object_store_id));
-  }
-
-  // IndexedDBCursor
-  virtual void Advance(unsigned long,
-                       scoped_refptr<IndexedDBCallbacksWrapper> callbacks)
-      OVERRIDE;
-  virtual void ContinueFunction(
-      scoped_ptr<IndexedDBKey> key,
-      scoped_refptr<IndexedDBCallbacksWrapper> callbacks) OVERRIDE;
-  virtual void DeleteFunction(
-      scoped_refptr<IndexedDBCallbacksWrapper> callbacks) OVERRIDE;
-  virtual void PrefetchContinue(
-      int number_to_fetch,
-      scoped_refptr<IndexedDBCallbacksWrapper> callbacks) OVERRIDE;
-  virtual void PrefetchReset(int used_prefetches, int unused_prefetches)
-      OVERRIDE;
-  virtual void PostSuccessHandlerCallback() OVERRIDE {}
-
-  const IndexedDBKey& key() const { return cursor_->key(); }
-  const IndexedDBKey& primary_key() const { return cursor_->primary_key(); }
-  std::vector<char>* Value() const {
-    return (cursor_type_ == indexed_db::CURSOR_KEY_ONLY) ? NULL
-                                                         : cursor_->Value();
-  }
-  void Close();
-
- private:
-  IndexedDBCursorImpl(scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
-                      indexed_db::CursorType cursor_type,
-                      IndexedDBDatabase::TaskType task_type,
-                      IndexedDBTransaction* transaction,
-                      int64 object_store_id);
-  virtual ~IndexedDBCursorImpl();
-
-  class CursorIterationOperation;
-  class CursorAdvanceOperation;
-  class CursorPrefetchIterationOperation;
-
-  IndexedDBDatabase::TaskType task_type_;
-  indexed_db::CursorType cursor_type_;
-  const scoped_refptr<IndexedDBTransaction> transaction_;
-  const int64 object_store_id_;
-
-  // Must be destroyed before transaction_.
-  scoped_ptr<IndexedDBBackingStore::Cursor> cursor_;
-  // Must be destroyed before transaction_.
-  scoped_ptr<IndexedDBBackingStore::Cursor> saved_cursor_;
-
-  bool closed_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_IMPL_H_