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// Copyright 2014 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_METRICS_METRICS_PROVIDER_H_
#define COMPONENTS_METRICS_METRICS_PROVIDER_H_
#include "base/basictypes.h"
namespace metrics {
class ChromeUserMetricsExtension;
class SystemProfileProto;
class SystemProfileProto_Stability;
// MetricsProvider is an interface allowing different parts of the UMA protos to
// be filled out by different classes.
class MetricsProvider {
public:
MetricsProvider() {}
virtual ~MetricsProvider() {}
// Called when a new MetricsLog is created.
virtual void OnDidCreateMetricsLog() {}
// Called when metrics recording has been enabled.
virtual void OnRecordingEnabled() {}
// Called when metrics recording has been disabled.
virtual void OnRecordingDisabled() {}
// Provides additional metrics into the system profile.
virtual void ProvideSystemProfileMetrics(
SystemProfileProto* system_profile_proto) {}
// Provides additional stability metrics. Stability metrics can be provided
// directly into |stability_proto| fields or by logging stability histograms
// via the UMA_STABILITY_HISTOGRAM_ENUMERATION() macro.
virtual void ProvideStabilityMetrics(
SystemProfileProto* system_profile_proto) {}
// Provides general metrics that are neither system profile nor stability
// metrics.
virtual void ProvideGeneralMetrics(
ChromeUserMetricsExtension* uma_proto) {}
private:
DISALLOW_COPY_AND_ASSIGN(MetricsProvider);
};
} // namespace metrics
#endif // COMPONENTS_METRICS_METRICS_PROVIDER_H_
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