refactor(benchpress): convert src and test to typescript

Fixes #2007

modules/benchpress/src/metric.ts

@@ -0,0 +1,32 @@
+import {bind} from 'angular2/di';
+import {Promise, PromiseWrapper} from 'angular2/src/facade/async';
+import {ABSTRACT, BaseException} from 'angular2/src/facade/lang';
+import {StringMap} from 'angular2/src/facade/collection';
+
+/**
+ * A metric is measures values
+ */
+@ABSTRACT()
+export class Metric {
+  static bindTo(delegateToken) {
+    return [bind(Metric).toFactory((delegate) => delegate, [delegateToken])];
+  }
+
+  /**
+   * Starts measuring
+   */
+  beginMeasure(): Promise<any> { throw new BaseException('NYI'); }
+
+  /**
+   * Ends measuring and reports the data
+   * since the begin call.
+   * @param restart: Whether to restart right after this.
+   */
+  endMeasure(restart: boolean): Promise<StringMap<string, any>> { throw new BaseException('NYI'); }
+
+  /**
+   * Describes the metrics provided by this metric implementation.
+   * (e.g. units, ...)
+   */
+  describe(): StringMap<string, any> { throw new BaseException('NYI'); }
+}