Send IndexedDB observations through IDBDatabaseCallbacks.

content/browser/indexed_db/indexed_db_observation.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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_OBSERVATION_H_
-#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_OBSERVATION_H_
-
-#include "base/macros.h"
-#include "content/browser/indexed_db/indexed_db_value.h"
-#include "content/common/content_export.h"
-#include "content/common/indexed_db/indexed_db_key_range.h"
-#include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBTypes.h"
-
-namespace content {
-
-// Represents a single observed operation (put/add/delete/clear) of a
-// transaction.
-class IndexedDBObservation {
- public:
-  using OperationType = blink::WebIDBOperationType;
-
-  IndexedDBObservation(int32_t object_store_id, OperationType type);
-  IndexedDBObservation(int32_t object_store_id,
-                       OperationType type,
-                       IndexedDBKeyRange key_range);
-  IndexedDBObservation(int32_t object_store_id,
-                       OperationType type,
-                       IndexedDBKeyRange key_range,
-                       IndexedDBValue value);
-
-  ~IndexedDBObservation();
-
-  int64_t object_store_id() const { return object_store_id_; }
-  OperationType type() const { return type_; }
-  const IndexedDBKeyRange key_range() const { return key_range_; }
-  const IndexedDBValue value() const { return value_; }
-
- private:
-  int64_t object_store_id_;
-  OperationType type_;
-  // Populated for ADD, PUT, and DELETE operations.
-  IndexedDBKeyRange key_range_;
-  // Populated for ADD and PUT operations if values are requested.
-  IndexedDBValue value_;
-
-  DISALLOW_COPY_AND_ASSIGN(IndexedDBObservation);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_OBSERVATION_H_