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Unified Diff: base/metrics/histogram_samples.h

Issue 1485763002: Merge multiple histogram snapshots into single one for reporting. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@shared-histograms
Patch Set: added merge test Created 5 years, 1 month ago
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Index: base/metrics/histogram_samples.h
diff --git a/base/metrics/histogram_samples.h b/base/metrics/histogram_samples.h
index 76f84ff571f27d2a8f10852e0d11e1f1027c348e..efd7e5e1f04ce233ecf641ab7ac679df20a992e2 100644
--- a/base/metrics/histogram_samples.h
+++ b/base/metrics/histogram_samples.h
@@ -55,6 +55,7 @@ class BASE_EXPORT HistogramSamples {
virtual HistogramBase::Count GetCount(HistogramBase::Sample value) const = 0;
virtual HistogramBase::Count TotalCount() const = 0;
+ virtual void Negate() = 0;
virtual void Add(const HistogramSamples& other);
// Add from serialized samples.
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