Send IndexedDB observations through IDBDatabaseCallbacks.

third_party/WebKit/Source/modules/indexeddb/WebIDBObserverImpl.h

-// 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 WebIDBObserverImpl_h
-#define WebIDBObserverImpl_h
-
-#include <bitset>
-
-#include "modules/indexeddb/IDBObserver.h"
-#include "platform/heap/Persistent.h"
-#include "public/platform/modules/indexeddb/WebIDBObserver.h"
-#include "public/platform/modules/indexeddb/WebIDBTypes.h"
-
-namespace blink {
-
-class IDBObserver;
-struct WebIDBObservation;
-
-class WebIDBObserverImpl final : public WebIDBObserver {
-  USING_FAST_MALLOC(WebIDBObserverImpl);
-
- public:
-  static std::unique_ptr<WebIDBObserverImpl> create(
-      IDBObserver*,
-      bool transaction,
-      bool values,
-      bool noRecords,
-      std::bitset<WebIDBOperationTypeCount> operationTypes);
-
-  ~WebIDBObserverImpl() override;
-
-  void setId(int32_t);
-
-  bool transaction() const { return m_transaction; }
-  bool noRecords() const { return m_noRecords; }
-  bool values() const { return m_values; }
-  const std::bitset<WebIDBOperationTypeCount>& operationTypes() const {
-    return m_operationTypes;
-  }
-
-  void onChange(const WebVector<WebIDBObservation>&,
-                const WebVector<int32_t>& observationIndex);
-
- private:
-  enum { kInvalidObserverId = -1 };
-
-  WebIDBObserverImpl(IDBObserver*,
-                     bool transaction,
-                     bool values,
-                     bool noRecords,
-                     std::bitset<WebIDBOperationTypeCount> operationTypes);
-
-  int32_t m_id;
-  bool m_transaction;
-  bool m_values;
-  bool m_noRecords;
-  // Operation type bits are set corresponding to WebIDBOperationType.
-  std::bitset<WebIDBOperationTypeCount> m_operationTypes;
-  Persistent<IDBObserver> m_observer;
-};
-
-}  // namespace blink
-
-#endif  // WebIDBObserverImpl_h