Add some closureised JS bindings for DevTools for use by headless embedder

headless/test/bindings_test.js

+// Copyright 2017 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.
+
+goog.require('goog.DevTools.DOM');
+goog.require('goog.DevTools.Runtime');
+goog.require('goog.DevTools.TestHarness');
+goog.provide('goog.DevTools.BindingsTest');
+
+goog.DevTools.TestHarness.AddTest("Simple Test", function(test) {
+  var Runtime = new goog.DevTools.Runtime(test.connection_);
+  Runtime.Evaluate({'expression': '1+1'}).then(function(message) {
+    test.AssertEq(2, message.result.value, "(message.result.value)");
+    test.Finish();
+  });
+});
+
+goog.DevTools.TestHarness.AddTest("Event Test", function(test) {
+  var DOM = new goog.DevTools.DOM(test.connection_);
+  var Runtime = new goog.DevTools.Runtime(test.connection_);
+  var bodyNode = {};
+  DOM.Enable().then(function() {
+    DOM.OnChildNodeCountUpdated(function(params) {
+      test.AssertEq(1, params.childNodeCount, "(params.childNodeCount)");
+      test.AssertEq(bodyNode.nodeId, params.nodeId, "(params.nodeId)");
+      test.Finish();
+    });
+    DOM.GetDocument({}).then(function(result) {
+      bodyNode = result.root.children[0].children[1];
+      test.AssertEq("BODY", bodyNode.nodeName, "(bodyNode.nodeName)");
+      var div = document.createElement('div');
+      document.body.appendChild(div);
+    });
+  });
+});
+
+goog.DevTools.TestHarness.RunTests();