refactor(benchpress): convert src and test to typescript

Fixes #2007

modules/benchpress/test/trace_event_factory.ts

@@ -0,0 +1,33 @@
+import {isPresent} from 'angular2/src/facade/lang';
+
+export class TraceEventFactory {
+  private _cat: string;
+  private _pid;
+
+  constructor(cat, pid) {
+    this._cat = cat;
+    this._pid = pid;
+  }
+
+  create(ph, name, time, args = null) {
+    var res = {'name': name, 'cat': this._cat, 'ph': ph, 'ts': time, 'pid': this._pid};
+    if (isPresent(args)) {
+      res['args'] = args;
+    }
+    return res;
+  }
+
+  markStart(name, time) { return this.create('b', name, time); }
+
+  markEnd(name, time) { return this.create('e', name, time); }
+
+  start(name, time, args = null) { return this.create('B', name, time, args); }
+
+  end(name, time, args = null) { return this.create('E', name, time, args); }
+
+  complete(name, time, duration, args = null) {
+    var res = this.create('X', name, time, args);
+    res['dur'] = duration;
+    return res;
+  }
+}