chrome/browser/metrics/android_metrics_provider.h

   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 CHROME_BROWSER_METRICS_ANDROID_METRICS_PROVIDER_H_
   6 #define CHROME_BROWSER_METRICS_ANDROID_METRICS_PROVIDER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "chrome/browser/android/activity_type_ids.h"
  10 #include "components/metrics/metrics_provider.h"
  11
  12 class PrefService;
  13 class PrefRegistrySimple;
  14
  15 namespace metrics {
  16 class ChromeUserMetricsExtension;
  17 }
  18
  19 // AndroidMetricsProvider provides Android-specific stability metrics.
  20 class AndroidMetricsProvider : public metrics::MetricsProvider {
  21  public:
  22   // Creates the AndroidMetricsProvider with the given |local_state|.
  23   explicit AndroidMetricsProvider(PrefService* local_state);
  24   ~AndroidMetricsProvider() override;
  25
  26   // metrics::MetricsProvider:
  27   void ProvideStabilityMetrics(
  28       metrics::SystemProfileProto* system_profile_proto) override;
  29   void ProvideGeneralMetrics(
  30       metrics::ChromeUserMetricsExtension* uma_proto) override;
  31
  32   // Called when the Activity that the user interacts with is swapped out.
  33   // TODO(asvitkine): Expose a way for Android code to actually invoke this.
  34   void OnForegroundActivityChanged(ActivityTypeIds::Type type);
  35
  36   // Registers local state prefs used by this class.
  37   static void RegisterPrefs(PrefRegistrySimple* registry);
  38
  39  private:
  40   // Called to log launch and crash stats to preferences.
  41   void LogStabilityToPrefs();
  42
  43   // Converts crash stats stored in the preferences into histograms.
  44   void ConvertStabilityPrefsToHistograms();
  45
  46   // Weak pointer to the local state prefs store.
  47   PrefService* local_state_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(AndroidMetricsProvider);
  50 };
  51
  52 #endif  // CHROME_BROWSER_METRICS_ANDROID_METRICS_PROVIDER_H_