Add blink_perf.html_to_dom benchmark.

third_party/WebKit/PerformanceTests/HTMLToDOM/dom/bindings/realdomparserbindings.js

+// Copyright 2016 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";
+
+(function(exports) {
+
+class RealDomParserBindings {
+  static setAttribute(element, name, value) {
+    element.setAttribute(name, value);
+  }
+
+  static appendChild(parent, child) {
+    parent.appendChild(child);
+  }
+
+  static createText(value) {
+    return document.createTextNode(value);
+  }
+
+  static createElement(tagName) {
+    return document.createElement(tagName);
+  }
+
+  static createDocumentFragment() {
+    return document.createDocumentFragment();
+  }
+}
+
+exports.RealDomParserBindings = RealDomParserBindings;
+
+})(this);