chromium/media/capabilities/in_memory_video_decode_stats_db_impl.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_CAPABILITIES_IN_MEMORY_VIDEO_DECODE_STATS_DB_IMPL_H_
#define MEDIA_CAPABILITIES_IN_MEMORY_VIDEO_DECODE_STATS_DB_IMPL_H_

#include <map>
#include <memory>

#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/leveldb_proto/public/proto_database.h"
#include "media/base/media_export.h"
#include "media/base/video_codecs.h"
#include "media/capabilities/video_decode_stats_db.h"
#include "ui/gfx/geometry/size.h"

namespace media {

class VideoDecodeStatsDBProvider;

// The in-memory database disappears with profile shutdown to preserve the
// privacy of off-the-record (OTR) browsing profiles (Guest and Incognito). It
// also allows the MediaCapabilities API to behave the same both on and
// off-the-record which prevents sites from detecting when users are OTR modes.
// VideoDecodeStatsDBProvider gives incognito profiles a hook to read the stats
// of the of the originating profile. Guest profiles are conceptually a blank
// slate and will not have a "seed" DB.
class MEDIA_EXPORT InMemoryVideoDecodeStatsDBImpl : public VideoDecodeStatsDB { … };

}  // namespace media

#endif  // MEDIA_CAPABILITIES_IN_MEMORY_VIDEO_DECODE_STATS_DB_IMPL_H_