Reporter: compute runtime also for Mocha.

Author: flore77

lib/_patch/reporter.js

@@ -29,8 +29,7 @@
   runner.on('runEnd', function(globalSuite) {
     var results = {};
 
-    // TODO Investigate why is the runtime not functioning for Mocha.
-    results.runtime = (window.mocha) ? 0 : globalSuite.runtime;
+    results.runtime = globalSuite.runtime;
     results.total = total;
     results.passed = passed;
     results.failed = failed;