[test] Add performance test for closures.

test/js-perf-test/JSTests.json

Index: test/js-perf-test/JSTests.json
diff --git a/test/js-perf-test/JSTests.json b/test/js-perf-test/JSTests.json
index 44b821f7b528993d01e9ab3b04a7b82498cb3412..2d587965bd7b9b3715ad4fc4f5182f606022bae3 100644
--- a/test/js-perf-test/JSTests.json
+++ b/test/js-perf-test/JSTests.json
@@ -76,6 +76,28 @@
       ]
     },
     {
+      "name": "Closures",
+      "path": ["Closures"],
+      "main": "run.js",
+      "resources": ["closures.js"],
+      "flags": [],
+      "results_regexp": "^Closures\\-Closures\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "Closures"}
+      ]
+    },
+    {
+      "name": "Closures",
+      "path": ["Closures"],
+      "main": "run.js",
+      "resources": ["closures.js"],
+      "flags": ["--mark_shared_functions_for_tier_up"],
+      "results_regexp": "^Closures\\-Closures\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "Closures"}

[Michael Achenbach, 2016/11/24 13:14:53]

I'm not sure if duplicate names work. How would that be unique on the perf
dashboard?

Also the regexp doesn't match what is printed.

+      ]
+    },
+    {
       "name": "Collections",
       "path": ["Collections"],
       "main": "run.js",