[js-perf-test] Add a basic async-await microbenchmark

test/js-perf-test/JSTests.json

 {
   "name": "JSTests",
   "run_count": 3,
   "run_count_arm": 1,
   "run_count_arm64": 1,
   "timeout": 120,
   "units": "score",
   "total": true,
   "resources": ["base.js"],
   "tests": [
     {
+      "name": "AsyncAwait",
+      "path": ["AsyncAwait"],
+      "main": "run.js",

[Michael Achenbach, 2016/12/27 21:31:17]

This currently fails on the bots. It looks like it has three sub-items that need
to be specified here as well like in line 73 below.

BaselineES2017
BaselineNaivePromises
Native

[jgruber, 2017/01/09 08:42:22]

Thanks, got a CL for this at https://codereview.chromium.org/2619753002/.

+      "resources": [
+        "native.js",
+        "baseline-babel-es2017.js",
+        "baseline-naive-promises.js"
+      ],
+      "flags": ["--allow-natives-syntax"],
+      "results_regexp": "^%s\\-AsyncAwait\\(Score\\): (.+)$"
+    },
+    {
       "name": "Generators",
       "path": ["Generators"],
       "main": "run.js",
       "resources": ["generators.js"],
       "flags": ["--harmony-function-sent"],
       "results_regexp": "^Generators\\-Generators\\(Score\\): (.+)$"
     },
     {
       "name": "GeneratorsIgnition",
       "path": ["Generators"],
@@ skipping 231 matching lines @@
         {"name": "Object.hasOwnProperty--DEINTERN-prop"},
         {"name": "Object.hasOwnProperty--NE-INTERN-prop"},
         {"name": "Object.hasOwnProperty--NE-DEINTERN-prop"},
         {"name": "Object.hasOwnProperty--el"},
         {"name": "Object.hasOwnProperty--el-str"},
         {"name": "Object.hasOwnProperty--NE-el"}
       ]
     }
   ]
 }