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

tracing/tracing/ui/base/name_line_chart_test.html

Index: tracing/tracing/ui/base/name_line_chart_test.html
diff --git a/tracing/tracing/ui/base/name_line_chart_test.html b/tracing/tracing/ui/base/name_line_chart_test.html
index e893642171a83e328fb3d91549c9bcf2e7ef6470..61603b76cd669e9eb56f4f5226810bc2e30a7e71 100644
--- a/tracing/tracing/ui/base/name_line_chart_test.html
+++ b/tracing/tracing/ui/base/name_line_chart_test.html
@@ -39,7 +39,7 @@ tr.b.unittest.testSuite(function() {
       {x: 'dog', alpha: 50, beta: 125}
     ];
 
-    var r = new tr.b.Range();
+    var r = new tr.b.math.Range();
     r.addValue(20);
     r.addValue(40);
     chart.brushedRange = r;
@@ -87,7 +87,7 @@ tr.b.unittest.testSuite(function() {
     var currentMouseIndex = undefined;
 
     function updateBrushedRange() {
-      var r = new tr.b.Range();
+      var r = new tr.b.math.Range();
       r.min = Math.max(0, Math.min(mouseDownIndex, currentMouseIndex));
       r.max = Math.min(chart.data.length, Math.max(mouseDownIndex,
           currentMouseIndex) + 1);