Added base template for config ui.

appengine/config_service/ui/bower_components/async/perf/memory.js

Index: appengine/config_service/ui/bower_components/async/perf/memory.js
diff --git a/appengine/config_service/ui/bower_components/async/perf/memory.js b/appengine/config_service/ui/bower_components/async/perf/memory.js
new file mode 100644
index 0000000000000000000000000000000000000000..1a022af3576c47adf42ab1e597c7d03b70e2c86f
--- /dev/null
+++ b/appengine/config_service/ui/bower_components/async/perf/memory.js
@@ -0,0 +1,46 @@
+if (process.execArgv[0] !== "--expose-gc") {
+    console.error("please run with node --expose-gc");
+    process.exit(1);
+}
+
+var async = require("../");
+global.gc();
+var startMem = process.memoryUsage().heapUsed;
+
+function waterfallTest(cb) {
+    var functions = [];
+
+    for(var i = 0; i < 10000; i++) {
+        functions.push(function leaky(next) {
+            function func1(cb) {return cb(); }
+
+            function func2(callback) {
+                if (true) {
+                    callback();
+                    //return next();  // Should be callback here.
+                }
+            }
+
+            function func3(cb) {return cb(); }
+
+            async.waterfall([
+              func1,
+              func2,
+              func3
+            ], next);
+        });
+    }
+
+    async.parallel(functions, cb);
+}
+
+function reportMemory() {
+    global.gc();
+    var increase = process.memoryUsage().heapUsed - startMem;
+    console.log("memory increase: " +
+      (+(increase / 1024).toPrecision(3)) + "kB");
+}
+
+waterfallTest(function () {
+    setTimeout(reportMemory, 0);
+});