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

tracing/tracing/extras/android/android_auditor.html

Index: tracing/tracing/extras/android/android_auditor.html
diff --git a/tracing/tracing/extras/android/android_auditor.html b/tracing/tracing/extras/android/android_auditor.html
index 8cbe1fb995985ac4f9b70752d708c2fd795a556d..fceaf546d8a3c49a70df49173a16b4f4da024068 100644
--- a/tracing/tracing/extras/android/android_auditor.html
+++ b/tracing/tracing/extras/android/android_auditor.html
@@ -6,9 +6,9 @@ found in the LICENSE file.
 -->
 
 <link rel="import" href="/tracing/base/iteration_helpers.html">
-<link rel="import" href="/tracing/base/range_utils.html">
+<link rel="import" href="/tracing/base/math/range_utils.html">
+<link rel="import" href="/tracing/base/math/statistics.html">
 <link rel="import" href="/tracing/base/scalar.html">
-<link rel="import" href="/tracing/base/statistics.html">
 <link rel="import" href="/tracing/base/unit.html">
 <link rel="import" href="/tracing/core/auditor.html">
 <link rel="import" href="/tracing/model/alert.html">
@@ -28,7 +28,7 @@ tr.exportTo('tr.e.audits', function() {
   var Auditor = tr.c.Auditor;
   var AndroidModelHelper = tr.model.helpers.AndroidModelHelper;
   var ColorScheme = tr.b.ColorScheme;
-  var Statistics = tr.b.Statistics;
+  var Statistics = tr.b.math.Statistics;
   var FRAME_PERF_CLASS = tr.model.FRAME_PERF_CLASS;
   var Alert = tr.model.Alert;
   var EventInfo = tr.model.EventInfo;
@@ -533,7 +533,8 @@ tr.exportTo('tr.e.audits', function() {
             events[events.length - 1].max - events[0].min);
         this.model.userModel.expectations.push(ir);
       }.bind(this);
-      tr.b.mergeRanges(tr.b.convertEventsToRanges(events), 30, mergerFunction);
+      tr.b.math.mergeRanges(
+          tr.b.math.convertEventsToRanges(events), 30, mergerFunction);
     },
 
     addInputInteractionRecords: function() {
@@ -550,9 +551,10 @@ tr.exportTo('tr.e.audits', function() {
         this.model.userModel.expectations.push(ir);
       }.bind(this);
       var inputRanges = inputSamples.map(function(sample) {
-        return tr.b.Range.fromExplicitRange(sample.timestamp, sample.timestamp);
+        return tr.b.math.Range.fromExplicitRange(
+            sample.timestamp, sample.timestamp);
       });
-      tr.b.mergeRanges(inputRanges, 30, mergerFunction);
+      tr.b.math.mergeRanges(inputRanges, 30, mergerFunction);
     }
   };