components/ntp_tiles/metrics.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 COMPONENTS_NTP_TILES_METRICS_H_
#define COMPONENTS_NTP_TILES_METRICS_H_

#include "components/ntp_tiles/ntp_tile_impression.h"

namespace rappor {
class RapporService;
}  // namespace rappor

namespace ntp_tiles {
namespace metrics {

// Records an NTP impression, after all tiles have loaded.
void RecordPageImpression(int number_of_tiles);

// Records an individual tile impression, which should be called only after the
// visual type of the tile has been determined. If |rappor_service| is null, no
// rappor metrics will be reported.
void RecordTileImpression(const NTPTileImpression& impression,
                          rappor::RapporService* rappor_service);

// Records a click on a tile.
void RecordTileClick(const NTPTileImpression& impression);

}  // namespace metrics
}  // namespace ntp_tiles

#endif  // COMPONENTS_NTP_TILES_METRICS_H_