Introduce telemetry.web_components and a simple component-based Results object

tools/telemetry/telemetry/components/results_viewer.js

+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+'use strict';
+
+tvcm.require('tvcm.ui');
+
+tvcm.exportTo('telemetry.components', function() {
+  /**
+   * @constructor
+   */
+  var ResultsViewer = tvcm.ui.define('x-results-viewer');
+
+  ResultsViewer.prototype = {
+    __proto__: HTMLUnknownElement.prototype,
+
+    decorate: function() {
+      this.dataToView_ = undefined;
+    },
+
+    get dataToView() {
+      return dataToView_;
+    },
+
+    set dataToView(dataToView) {
+      this.dataToView_ = dataToView;
+      this.updateContents_();
+    },
+
+    updateContents_: function() {
+      this.textContent = JSON.stringify(this.dataToView_);
+    }
+  };
+
+  return {
+    ResultsViewer: ResultsViewer
+  };
+});