1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef COMPONENTS_METRICS_METRICS_PROVIDER_H_ 6 #define COMPONENTS_METRICS_METRICS_PROVIDER_H_ 7 8 #include "base/basictypes.h" 9 10 namespace metrics { 11 12 class ChromeUserMetricsExtension; 13 class SystemProfileProto; 14 class SystemProfileProto_Stability; 15 16 // MetricsProvider is an interface allowing different parts of the UMA protos to 17 // be filled out by different classes. 18 class MetricsProvider { 19 public: 20 MetricsProvider() {} 21 virtual ~MetricsProvider() {} 22 23 // Called when a new MetricsLog is created. 24 virtual void OnDidCreateMetricsLog() {} 25 26 // Called when metrics recording has been enabled. 27 virtual void OnRecordingEnabled() {} 28 29 // Called when metrics recording has been disabled. 30 virtual void OnRecordingDisabled() {} 31 32 // Provides additional metrics into the system profile. 33 virtual void ProvideSystemProfileMetrics( 34 SystemProfileProto* system_profile_proto) {} 35 36 // Provides additional stability metrics. Stability metrics can be provided 37 // directly into |stability_proto| fields or by logging stability histograms 38 // via the UMA_STABILITY_HISTOGRAM_ENUMERATION() macro. 39 virtual void ProvideStabilityMetrics( 40 SystemProfileProto* system_profile_proto) {} 41 42 // Provides general metrics that are neither system profile nor stability 43 // metrics. 44 virtual void ProvideGeneralMetrics( 45 ChromeUserMetricsExtension* uma_proto) {} 46 47 // TODO(asvitkine): Remove this method. http://crbug.com/379148 48 virtual void RecordCurrentState() {} 49 50 private: 51 DISALLOW_COPY_AND_ASSIGN(MetricsProvider); 52 }; 53 54 } // namespace metrics 55 56 #endif // COMPONENTS_METRICS_METRICS_PROVIDER_H_ 57
