File: single_sample_metrics.mojom

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// 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.

module metrics.mojom;

// See components/metrics/single_sample_metrics_factory_impl.h for details.
interface SingleSampleMetricsProvider {
  // Returns a SingleSampleMetric.
  //
  // A single sample metric only reports its sample once at destruction time.
  // The sample may be changed prior to destruction using the SetSample() method
  // as many times as desired.
  //
  // See base/metrics/histograms.h for parameter definitions. |receiver| is the
  // returned histogram.
  AcquireSingleSampleMetric(string histogram_name, int32 min, int32 max,
                            uint32 bucket_count, int32 flags,
                            pending_receiver<SingleSampleMetric> receiver);
};

interface SingleSampleMetric {
  SetSample(int32 sample);
};