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

tracing/tracing/extras/importer/trace_event_importer.html

Index: tracing/tracing/extras/importer/trace_event_importer.html
diff --git a/tracing/tracing/extras/importer/trace_event_importer.html b/tracing/tracing/extras/importer/trace_event_importer.html
index 1441550d5603a7e34e2152c80a58c8fb40015f01..980505ae6f189bd8d7295fb72d6d47544b3159cf 100644
--- a/tracing/tracing/extras/importer/trace_event_importer.html
+++ b/tracing/tracing/extras/importer/trace_event_importer.html
@@ -7,7 +7,7 @@ found in the LICENSE file.
 
 <link rel="import" href="/tracing/base/base64.html">
 <link rel="import" href="/tracing/base/color_scheme.html">
-<link rel="import" href="/tracing/base/range.html">
+<link rel="import" href="/tracing/base/math/range.html">
 <link rel="import" href="/tracing/base/scalar.html">
 <link rel="import" href="/tracing/base/unit.html">
 <link rel="import" href="/tracing/base/utils.html">
@@ -2373,7 +2373,7 @@ tr.exportTo('tr.e.importer', function() {
       // the events, all of which have the same dump ID.
 
       // Calculate the range of the global memory dump.
-      var globalRange = new tr.b.Range();
+      var globalRange = new tr.b.math.Range();
       for (var pid in dumpIdEvents) {
         var processEvents = dumpIdEvents[pid];
         for (var i = 0; i < processEvents.length; i++)
@@ -2425,7 +2425,7 @@ tr.exportTo('tr.e.importer', function() {
         globalMemoryAllocatorDumpsByFullName, levelsOfDetail,
         allMemoryAllocatorDumpsByGuid, processEvents, pid, dumpId) {
       // Calculate the range of the process memory dump.
-      var processRange = new tr.b.Range();
+      var processRange = new tr.b.math.Range();
       for (var i = 0; i < processEvents.length; i++)
         processRange.addValue(this.toModelTimeFromUs_(processEvents[i].ts));
       if (processRange.isEmpty)