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

tracing/tracing/model/event_set.html

Index: tracing/tracing/model/event_set.html
diff --git a/tracing/tracing/model/event_set.html b/tracing/tracing/model/event_set.html
index 91c98eb25bdbb81f5e1e604fe6fa8526bbaa9d4c..d2dfd526045b75dfeab19e9d9cb081a52531fb0f 100644
--- a/tracing/tracing/model/event_set.html
+++ b/tracing/tracing/model/event_set.html
@@ -8,7 +8,7 @@ found in the LICENSE file.
 <link rel="import" href="/tracing/base/event.html">
 <link rel="import" href="/tracing/base/guid.html">
 <link rel="import" href="/tracing/base/iteration_helpers.html">
-<link rel="import" href="/tracing/base/range.html">
+<link rel="import" href="/tracing/base/math/range.html">
 <link rel="import" href="/tracing/model/event_registry.html">
 
 <script>
@@ -25,7 +25,7 @@ tr.exportTo('tr.model', function() {
    * @constructor
    */
   function EventSet(opt_events) {
-    this.bounds_ = new tr.b.Range();
+    this.bounds_ = new tr.b.math.Range();
     this.events_ = new Set();
     this.guid_ = tr.b.GUID.allocateSimple();
 
@@ -68,7 +68,7 @@ tr.exportTo('tr.model', function() {
     },
 
     clear: function() {
-      this.bounds_ = new tr.b.Range();
+      this.bounds_ = new tr.b.math.Range();
       this.events_.clear();
     },