Display Histograms in value-set-table-cells.

tracing/tracing/value/histogram_test.html

Index: tracing/tracing/value/histogram_test.html
diff --git a/tracing/tracing/value/histogram_test.html b/tracing/tracing/value/histogram_test.html
index 399cc8d0b0ef4bdb6fa65eaf176e073ccf472735..da801cfa4f037da74adbc8b9754e624a902f01e5 100644
--- a/tracing/tracing/value/histogram_test.html
+++ b/tracing/tracing/value/histogram_test.html
@@ -40,28 +40,29 @@ tr.b.unittest.testSuite(function() {
   }
 
   test('significance', function() {
-    assert.strictEqual(
-        new tr.v.Histogram('', unitlessNumber).getDifferenceSignificance(
-        new tr.v.Histogram('', unitlessNumber)), tr.v.Significance.DONT_CARE);
-
     var boundaries = tr.v.HistogramBinBoundaries.createLinear(0, 100, 10);
     var numericA = new tr.v.Histogram(
         '', unitlessNumber_smallerIsBetter, boundaries);
     var numericB = new tr.v.Histogram(
         '', unitlessNumber_smallerIsBetter, boundaries);
+
+    var dontCare = new tr.v.Histogram('', unitlessNumber, boundaries);
+    assert.strictEqual(dontCare.getDifferenceSignificance(dontCare),
+        tr.b.Statistics.Significance.DONT_CARE);
+
     for (var i = 0; i < 100; ++i) {
       numericA.addSample(i);
       numericB.addSample(i * 0.85);
     }
 
     assert.strictEqual(numericA.getDifferenceSignificance(numericB),
-        tr.v.Significance.INSIGNIFICANT);
+        tr.b.Statistics.Significance.INSIGNIFICANT);
     assert.strictEqual(numericB.getDifferenceSignificance(numericA),
-        tr.v.Significance.INSIGNIFICANT);
+        tr.b.Statistics.Significance.INSIGNIFICANT);
     assert.strictEqual(numericA.getDifferenceSignificance(numericB, 0.1),
-        tr.v.Significance.SIGNIFICANT);
+        tr.b.Statistics.Significance.SIGNIFICANT);
     assert.strictEqual(numericB.getDifferenceSignificance(numericA, 0.1),
-        tr.v.Significance.SIGNIFICANT);
+        tr.b.Statistics.Significance.SIGNIFICANT);
   });
 
   test('numericBasic', function() {