Merge NumericValue into Histogram

tracing/tracing/value/ui/histogram_span_test.html

Index: tracing/tracing/value/ui/histogram_span_test.html
diff --git a/tracing/tracing/value/ui/histogram_span_test.html b/tracing/tracing/value/ui/histogram_span_test.html
index b6e9a8440a0dbcb86ab3ba62b31c009a89420881..38942e8761457dcf302c2e9b15bb8aed8db71805 100644
--- a/tracing/tracing/value/ui/histogram_span_test.html
+++ b/tracing/tracing/value/ui/histogram_span_test.html
@@ -16,7 +16,7 @@ found in the LICENSE file.
 
 tr.b.unittest.testSuite(function() {
   test('basic', function() {
-    var h = new tr.v.Histogram(tr.b.Unit.byName.unitlessNumber);
+    var h = new tr.v.Histogram('', tr.b.Unit.byName.unitlessNumber);
     h.addSample(-1, {foo: new tr.v.d.Generic('a')});
     h.addSample(0, {foo: new tr.v.d.Generic('b')});
     h.addSample(0, {foo: new tr.v.d.Generic('b')});
@@ -41,7 +41,7 @@ tr.b.unittest.testSuite(function() {
   });
 
   test('emptyHistogram', function() {
-    var h = new tr.v.Histogram(tr.b.Unit.byName.unitlessNumber);
+    var h = new tr.v.Histogram('', tr.b.Unit.byName.unitlessNumber);
 
     var span = document.createElement('tr-v-ui-histogram-span');
     span.histogram = h;
@@ -49,7 +49,7 @@ tr.b.unittest.testSuite(function() {
   });
 
   test('nans', function() {
-    var h = new tr.v.Histogram(tr.b.Unit.byName.unitlessNumber);
+    var h = new tr.v.Histogram('', tr.b.Unit.byName.unitlessNumber);
     h.addSample(undefined, {foo: new tr.v.d.Generic('b')});
     h.addSample(NaN, {foo: new tr.v.d.Generic('c')});
     h.customizeSummaryOptions({nans: true});