Convert chart-json to Histograms.

tracing/tracing/value/histogram_set.html

Index: tracing/tracing/value/histogram_set.html
diff --git a/tracing/tracing/value/histogram_set.html b/tracing/tracing/value/histogram_set.html
index 370f0d585685c34dc0776b38ee1ec356ccee6eff..69a367621e03a9647951685f5d555be9fcd2ab0e 100644
--- a/tracing/tracing/value/histogram_set.html
+++ b/tracing/tracing/value/histogram_set.html
@@ -236,6 +236,9 @@ tr.exportTo('tr.v', function() {
     STORY_NAME: new HistogramGrouping('story',
         h => tr.v.d.IterationInfo.getField(h, 'storyDisplayName', '')),
 
+    LEGACY_TIR_LABEL: new HistogramGrouping('tir',
+        h => tr.v.d.IterationInfo.getField(h, 'legacyTIRLabel', '')),

[eakuefner, 2016/11/18 21:37:11]

nit: your indentation isn't style-guide compliant. either 4-space indent
everything or align with the first arg after the (.

+
     DISPLAY_LABEL: new HistogramGrouping('label',
         h => tr.v.d.IterationInfo.getField(h, 'displayLabel', 'Value'))
   };