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

tracing/tracing/ui/tracks/rect_track.html

Index: tracing/tracing/ui/tracks/rect_track.html
diff --git a/tracing/tracing/ui/tracks/rect_track.html b/tracing/tracing/ui/tracks/rect_track.html
index 6a2a3c04797fa6267b6b901f8818c7f9fc0f4406..f4120a1689b5c4d870e69762a685b8384d915288 100644
--- a/tracing/tracing/ui/tracks/rect_track.html
+++ b/tracing/tracing/ui/tracks/rect_track.html
@@ -7,7 +7,7 @@ found in the LICENSE file.
 
 <link rel="stylesheet" href="/tracing/ui/tracks/rect_track.css">
 
-<link rel="import" href="/tracing/base/sorted_array_utils.html">
+<link rel="import" href="/tracing/base/math/sorted_array_utils.html">
 <link rel="import" href="/tracing/model/proxy_selectable_item.html">
 <link rel="import" href="/tracing/ui/base/draw_helpers.html">
 <link rel="import" href="/tracing/ui/base/fast_rect_renderer.html">
@@ -161,7 +161,7 @@ tr.exportTo('tr.ui.tracks', function() {
       }
       onRect = onRect.bind(this);
       var instantEventWidth = 2 * viewPixWidthWorld;
-      tr.b.iterateOverIntersectingIntervals(this.rects_,
+      tr.b.math.iterateOverIntersectingIntervals(this.rects_,
           function(x) { return x.start; },
           function(x) {
             return x.duration === 0 ?
@@ -212,7 +212,7 @@ tr.exportTo('tr.ui.tracks', function() {
 
     addClosestEventToSelection: function(worldX, worldMaxDist, loY, hiY,
         selection) {
-      var rect = tr.b.findClosestIntervalInSortedIntervals(
+      var rect = tr.b.math.findClosestIntervalInSortedIntervals(
           this.rects_,
           function(x) { return x.start; },
           function(x) { return x.end; },