[test] Add object literal micro-benchmarks.

test/js-perf-test/SixSpeed.json

Index: test/js-perf-test/SixSpeed.json
diff --git a/test/js-perf-test/SixSpeed.json b/test/js-perf-test/SixSpeed.json
index c72345efdbe2d213965902db30294f7c0d89841f..eaf44510efbac59ead639385ea2b631eddd87ead 100644
--- a/test/js-perf-test/SixSpeed.json
+++ b/test/js-perf-test/SixSpeed.json
@@ -9,6 +9,20 @@
   "resources": ["base.js"],
   "tests": [
     {
+      "name": "Computed property names in object literals",
+      "path": ["SixSpeed/ObjectLiterals"],

[Yang, 2016/11/16 20:44:30]

So, uhm.. bikeshedding. I intended the file names to be hacker_case. Maybe we
can keep that convention? We could also rename the file name for "spread.js" to
"Spread.js", if you want. But then we have "run.js" in lowercase ... :)

+      "main": "run.js",
+      "resources": [
+        "run.js",
+        "ObjectLiterals.js"
+      ],
+      "results_regexp": "^%s\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "ObjectLiterals-ES5"},
+        {"name": "ObjectLiterals-ES6"}
+      ]
+    },
+    {
       "name": "Spread",
       "path": ["SixSpeed/spread"],
       "main": "run.js",