Removed the isTimeHighResolution check from mapSingleTrace. It serves no purpose anymore.

perf_insights/perf_insights/map_single_trace.html

Index: perf_insights/perf_insights/map_single_trace.html
diff --git a/perf_insights/perf_insights/map_single_trace.html b/perf_insights/perf_insights/map_single_trace.html
index 583aae103776f43a25eeb4b13bfbdc78008c050b..90b90917782bc2ad2e29dec473d86ec3c5614532 100644
--- a/perf_insights/perf_insights/map_single_trace.html
+++ b/perf_insights/perf_insights/map_single_trace.html
@@ -34,14 +34,6 @@ tr.exportTo('pi', function() {
   }
 
   function mapSingleTrace(result, model, options, mapFunction) {
-    // Do not map the trace if its timer is low resolution.
-    if (!model.isTimeHighResolution) {
-      var err = new Error('Trace doesn\'t have high resolution time, ' +
-                          'cannot map.');
-      err.name = 'LowResolutionTimeError';
-      throw err;
-    }
-
     // Map the function.
     var numPairsBeforeMapping = tr.b.dictionaryLength(result.pairs);
     var numFailuresBeforeMapping = result.failures.length;