Merge NumericValue into Histogram

tracing/tracing/metrics/system_health/rail_power_metric_test.html

Index: tracing/tracing/metrics/system_health/rail_power_metric_test.html
diff --git a/tracing/tracing/metrics/system_health/rail_power_metric_test.html b/tracing/tracing/metrics/system_health/rail_power_metric_test.html
index 41b148b87df6d73c5f620ffe73512c106e1570e9..fec16911a467e48e13d25c6ebac6ffc5ca694798 100644
--- a/tracing/tracing/metrics/system_health/rail_power_metric_test.html
+++ b/tracing/tracing/metrics/system_health/rail_power_metric_test.html
@@ -17,13 +17,13 @@ found in the LICENSE file.
 function getMetricValueSum(values, name) {
   for (var value of values)
     if (value.name === name)
-      return value.numeric.sum;
+      return value.sum;
 }
 
 function getMetricValueAvg(values, name) {
   for (var value of values)
     if (value.name === name)
-      return value.numeric.average;
+      return value.average;
 }
 
 tr.b.unittest.testSuite(function() {