Pass DomContentLoaded event from prerenders to launching elements.

chrome/test/data/prerender/prerender_events_common.js

 // Copyright (c) 2012 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.
 
 // Common js for prerender loaders; defines the helper functions that put
 // event handlers on prerenders and track the events for browser tests.
 
 // TODO(gavinp): Put more common loader logic in here.
 
 // Currently only errors with the ordering of Prerender events are caught.
 var hadPrerenderEventErrors = false;
 
 var receivedPrerenderStartEvents = [];
 var receivedPrerenderLoadEvents = [];
+var receivedPrerenderDomContentLoadedEvents = [];
 var receivedPrerenderStopEvents = [];
 
 function PrerenderStartHandler(index) {
   if (receivedPrerenderStartEvents[index] ||
       receivedPrerenderLoadEvents[index] ||
       receivedPrerenderStopEvents[index]) {
     hadPrerenderEventErrors = true;
     return;
   }
   receivedPrerenderStartEvents[index] = true;
 }
 
 function PrerenderLoadHandler(index) {
   if (!receivedPrerenderStartEvents[index] ||
       receivedPrerenderStopEvents[index]) {
     hadPrerenderEventErrors = true;
     return;
   }
   if (!receivedPrerenderLoadEvents[index])
     receivedPrerenderLoadEvents[index] = 0;
   receivedPrerenderLoadEvents[index]++;
 }
 
+function PrerenderDomContentLoadedHandler(index) {
+  if (!receivedPrerenderStartEvents[index] ||
+      receivedPrerenderStopEvents[index]) {
+    hadPrerenderEventErrors = true;
+    return;
+  }
+  if (!receivedPrerenderDomContentLoadedEvents[index])
+    receivedPrerenderDomContentLoadedEvents[index] = 0;
+  receivedPrerenderDomContentLoadedEvents[index]++;
+}
+
 function PrerenderStopHandler(index) {
   if (!receivedPrerenderStartEvents[index] ||
       receivedPrerenderStopEvents[index]) {
     hadPrerenderEventErrors = true;
     return;
   }
   receivedPrerenderStopEvents[index] = true;
 }
 
 function AddEventHandlersToLinkElement(link, index) {
   link.addEventListener('webkitprerenderstart',
                         PrerenderStartHandler.bind(null, index), false);
   link.addEventListener('webkitprerenderload',
                         PrerenderLoadHandler.bind(null, index), false);
+  link.addEventListener('webkitprerenderdomcontentloaded',
+                        PrerenderDomContentLoadedHandler.bind(null, index),
+                        false);
   link.addEventListener('webkitprerenderstop',
                         PrerenderStopHandler.bind(null, index), false);
 }
 
 function AddPrerender(url, index) {
   var link = document.createElement('link');
   link.rel = 'prerender';
   link.href = url;
   AddEventHandlersToLinkElement(link, index);
   document.body.appendChild(link);
@@ skipping 87 matching lines @@
     cancelable: true,
     detail: 1,
     metaKey: true,
     shiftKey: true
   }));
 }
 
 function WindowOpen(url) {
   window.open(url);
 }