Serialize/Deserialize support in HistogramBase

chrome/common/metrics/metrics_service_base.cc

Index: chrome/common/metrics/metrics_service_base.cc
diff --git a/chrome/common/metrics/metrics_service_base.cc b/chrome/common/metrics/metrics_service_base.cc
index 84410c4f0dc595edf92ea4803a327798b35f6ff0..c0df1bdd2b86edc488926f1d5c08976d6b477366 100644
--- a/chrome/common/metrics/metrics_service_base.cc
+++ b/chrome/common/metrics/metrics_service_base.cc
@@ -38,7 +38,8 @@ void MetricsServiceBase::RecordCurrentHistograms() {
 void MetricsServiceBase::RecordDelta(
     const base::Histogram& histogram,
     const base::HistogramSamples& snapshot) {
-  log_manager_.current_log()->RecordHistogramDelta(histogram, snapshot);
+  log_manager_.current_log()->RecordHistogramDelta(histogram.histogram_name(),

[Ilya Sherman, 2012/12/29 00:17:30]

This is a fine change, but why is it part of this CL?

[kaiwang, 2013/01/08 00:51:40]

In this CL, I changed most of the serializing related code to use HistogramBase
instead of Histogram.
For RecordHistogramDelta, only name is used, so I directly changed it to only
depend on name.

[Ilya Sherman, 2013/01/08 22:31:53]

Ok, fair enough :)

+                                                   snapshot);
 }
 
 void MetricsServiceBase::InconsistencyDetected(