chromium/components/offline_items_collection/core/throttled_offline_content_provider.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_OFFLINE_ITEMS_COLLECTION_CORE_THROTTLED_OFFLINE_CONTENT_PROVIDER_H_
#define COMPONENTS_OFFLINE_ITEMS_COLLECTION_CORE_THROTTLED_OFFLINE_CONTENT_PROVIDER_H_

#include <map>
#include <utility>

#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "base/time/time.h"
#include "components/offline_items_collection/core/offline_content_provider.h"

namespace base {
class TimeDelta;
}  // namespace base

namespace offline_items_collection {

// A simple wrapper around an OfflineContentProvider that throttles
// OfflineContentProvider::Observer::OnItemUpdated() calls to all registered
// observers. This class will coalesce updates to an item with an equal
// ContentId.
class ThrottledOfflineContentProvider
    : public OfflineContentProvider,
      public OfflineContentProvider::Observer { … };

}  // namespace offline_items_collection

#endif  // COMPONENTS_OFFLINE_ITEMS_COLLECTION_CORE_THROTTLED_OFFLINE_CONTENT_PROVIDER_H_