NoStatePrefetch: Add a more dummy prerender_test_server.py

chrome/browser/prerender/tools/prerender_test_server/prerender.js

+// Copyright (c) 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.
+
+function add_link(url, rel) {
+  var link = document.getElementById(rel) || document.createElement('link');
+  link.id = rel;
+  link.rel = rel;
+  link.href = url;
+  document.body.appendChild(link);
+}
+
+function prerender_url() {
+  var anchor = document.getElementById('anchor');
+  anchor.innerText = '';
+  anchor.href = '';
+  var progress = document.getElementById('progress');
+  progress.innerText = '';
+  var input_url = document.getElementById('url');
+  var url = input_url.value;
+  if (!url)
+    return false;
+  if (!url.indexOf('http') == 0)
+    url = 'http://' + url;
+  // Set the input url to the url we're actually prerendering.
+  input_url.value = url;
+  add_link(url, 'prerender');
+
+  window.setTimeout(function() {
+    console.log('loaded');
+    set_progress("Click to navigate to prerendered page: ");
+    anchor.href = url;
+    anchor.innerText = url;
+  }, 0);
+  console.log('prerendering: ' + url);
+  return false;
+}
+
+function set_progress(progress_text) {
+  var progress = document.getElementById('progress');
+  progress.innerText = progress_text;
+}