[js-perf-test] add microbenchmarks for String Iterators

test/js-perf-test/StringIterators/run.js

Index: test/js-perf-test/StringIterators/run.js
diff --git a/test/js-perf-test/Generators/run.js b/test/js-perf-test/StringIterators/run.js
similarity index 86%
copy from test/js-perf-test/Generators/run.js
copy to test/js-perf-test/StringIterators/run.js
index 6feb6f79fb4b4703c5deb20ac591d003716cc8cf..4f9f2dd30d3dcd699cf20ca316ac5bcfff5c6e07 100644
--- a/test/js-perf-test/Generators/run.js
+++ b/test/js-perf-test/StringIterators/run.js
@@ -4,12 +4,13 @@
 
 
 load('../base.js');
-load('generators.js');
+load('string-iterator.js');
+
 
 var success = true;
 
 function PrintResult(name, result) {
-  print(name + '-Generators(Score): ' + result);
+  print(name + '-StringIterators(Score): ' + result);
 }