Add sparse histograms to the metrics library and metrics client.
Samples to these histograms are any 32-bit int value.
BUG=chromium:222189
TEST=manual
Change-Id: Ic8d5773d05d717a275c4a4b5616e0e4c307337b8
Reviewed-on: https://gerrit.chromium.org/gerrit/45897
Tested-by: Luigi Semenzato <semenzato@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
Commit-Queue: Luigi Semenzato <semenzato@chromium.org>
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
diff --git a/metrics/metrics_library.h b/metrics/metrics_library.h
index ce6985f..9a4c59b 100644
--- a/metrics/metrics_library.h
+++ b/metrics/metrics_library.h
@@ -20,6 +20,7 @@
virtual bool SendToUMA(const std::string& name, int sample,
int min, int max, int nbuckets) = 0;
virtual bool SendEnumToUMA(const std::string& name, int sample, int max) = 0;
+ virtual bool SendSparseToUMA(const std::string& name, int sample) = 0;
virtual bool SendUserActionToUMA(const std::string& action) = 0;
virtual ~MetricsLibraryInterface() {}
};
@@ -74,6 +75,12 @@
// normal, while 100 is high).
bool SendEnumToUMA(const std::string& name, int sample, int max);
+ // Sends sparse histogram sample to Chrome for transport to UMA. Returns
+ // true on success.
+ //
+ // |sample| is the 32-bit integer value to be recorded.
+ bool SendSparseToUMA(const std::string& name, int sample);
+
// Sends a user action to Chrome for transport to UMA and returns true on
// success. This method results in the equivalent of an asynchronous
// non-blocking RPC to UserMetrics::RecordAction. The new metric must be