[tracing] Move math utilities from base into their own subdirectory (attempt 2)

tracing/tracing/value/ui/histogram_set_table_row_state.html

Index: tracing/tracing/value/ui/histogram_set_table_row_state.html
diff --git a/tracing/tracing/value/ui/histogram_set_table_row_state.html b/tracing/tracing/value/ui/histogram_set_table_row_state.html
index 9d797d2f3c529392c2d18e777634a5f0b87b922d..6c0316b675a39a3d57b8346a242d0293f641c3f2 100644
--- a/tracing/tracing/value/ui/histogram_set_table_row_state.html
+++ b/tracing/tracing/value/ui/histogram_set_table_row_state.html
@@ -5,7 +5,7 @@ Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
-<link rel="import" href="/tracing/base/range.html">
+<link rel="import" href="/tracing/base/math/range.html">
 
 <script>
 'use strict';
@@ -13,7 +13,7 @@ tr.exportTo('tr.v.ui', function() {
   class HistogramSetTableCellState {
     constructor() {
       this.isOpen_ = false;
-      this.brushedBinRange_ = new tr.b.Range();
+      this.brushedBinRange_ = new tr.b.math.Range();
       this.mergeSampleDiagnostics_ = true;
     }
 
@@ -59,7 +59,7 @@ tr.exportTo('tr.v.ui', function() {
         cell.mergeSampleDiagnostics = false;
       }
       if (dict.brushedBinRange) {
-        cell.brushedBinRange = tr.b.Range.fromExplicitRange(
+        cell.brushedBinRange = tr.b.math.Range.fromExplicitRange(
             dict.brushedBinRange[0], dict.brushedBinRange[1]);
       }
       return cell;