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

tracing/tracing/ui/base/scatter_chart.html

Index: tracing/tracing/ui/base/scatter_chart.html
diff --git a/tracing/tracing/ui/base/scatter_chart.html b/tracing/tracing/ui/base/scatter_chart.html
index ee94887a951ef8ed73c70380062031b4ddd1742e..784d2a6a1b5f168b5f041e02e4ce825b3ba3f6c0 100644
--- a/tracing/tracing/ui/base/scatter_chart.html
+++ b/tracing/tracing/ui/base/scatter_chart.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">
 <link rel="import" href="/tracing/ui/base/chart_base_2d.html">
 
 <script>
@@ -28,8 +28,8 @@ tr.exportTo('tr.ui.b', function() {
 
     decorate() {
       super.decorate();
-      this.brushedXRange_ = new tr.b.Range();
-      this.brushedYRange_ = new tr.b.Range();
+      this.brushedXRange_ = new tr.b.math.Range();
+      this.brushedYRange_ = new tr.b.math.Range();
     },
 
     get hideLegend() {
@@ -48,11 +48,11 @@ tr.exportTo('tr.ui.b', function() {
       super.updateMargins_();
       if (this.data.length === 0) return;
 
-      var rightOverhangPx = tr.b.Statistics.max(
+      var rightOverhangPx = tr.b.math.Statistics.max(
           this.data, d => this.xScale_(d.x) + d.radius - this.graphWidth);
       this.margin.right = Math.max(this.margin.right, rightOverhangPx);
 
-      var topOverhangPx = tr.b.Statistics.max(
+      var topOverhangPx = tr.b.math.Statistics.max(
           this.data, d => (this.graphHeight - this.yScale_(d.y)) + d.radius) -
         this.graphHeight;
       this.margin.top = Math.max(this.margin.top, topOverhangPx);