Delete TelemetryInfo, MergedTelemetryInfo diagnostics.

tracing/tracing/value/histogram_parameter_collector.html

Index: tracing/tracing/value/histogram_parameter_collector.html
diff --git a/tracing/tracing/value/histogram_parameter_collector.html b/tracing/tracing/value/histogram_parameter_collector.html
index 639c5b8ca55f15649c824e74fd3900234ca63e2b..2ecfe173edf963704cb2ab6d589dc09e20b02b66 100644
--- a/tracing/tracing/value/histogram_parameter_collector.html
+++ b/tracing/tracing/value/histogram_parameter_collector.html
@@ -70,12 +70,6 @@ tr.exportTo('tr.v', function() {
             tr.v.d.RESERVED_NAMES.BENCHMARK_START);
         if (startTime !== undefined) startTime = startTime.minDate.getTime();
 
-        const telemetry = tr.v.d.TelemetryInfo.getFromHistogram(hist);
-
-        if (startTime === undefined && telemetry && telemetry.benchmarkStart) {
-          startTime = telemetry.benchmarkStart.getTime();
-        }
-
         const displayLabel = getDisplayLabel(hist);
 
         if (this.labelsToStartTimes_.has(displayLabel)) {
@@ -104,28 +98,6 @@ tr.exportTo('tr.v', function() {
         for (const tag of (storyTags || [])) {
           allStoryTags.add(tag);
         }
-
-        if (!telemetry) continue;
-
-        // Translate storyGroupingKeys like {cache_temp: 'cold'} into
-        // HistogramGroupings like {
-        //     key: 'storyGroupingKey_cache_temp',
-        //     callback: (a function that takes a Histogram and returns its
-        //                TelemetryInfo.storyGroupingKeys.get('cache_temp')),
-        // }
-
-        for (const [key, value] of telemetry.storyGroupingKeys) {
-          // If this storyGroupingKey is not yet known, then add a new
-          // HistogramGrouping to keysToGroupings_ and a new Set of values to
-          // keysToValues_
-          const groupingKey = 'storyGroupingKey_' + key;
-          if (this.keysToGroupings_.has(groupingKey)) continue;
-          const callback = tr.v.d.TelemetryInfo.makeStoryGroupingKeyLabelGetter(
-              key);
-          this.keysToGroupings_.set(groupingKey, new tr.v.HistogramGrouping(
-              groupingKey, callback));
-          this.keysToValues_.set(groupingKey, new Set([callback(hist)]));
-        }
       }
       tr.b.Timing.instant(
           'HistogramParameterCollector', 'maxSampleCount', maxSampleCount);