Fix regression with back-button not working on prerendered and instant pages.

chrome/test/data/prerender/prerender_loader.html

Index: chrome/test/data/prerender/prerender_loader.html
diff --git a/chrome/test/data/prerender/prerender_loader.html b/chrome/test/data/prerender/prerender_loader.html
index f8089d3573e2c44ca32cc3187fecf37333b12c46..ab37c125454280179bb868f05c5c703ee58df424 100644
--- a/chrome/test/data/prerender/prerender_loader.html
+++ b/chrome/test/data/prerender/prerender_loader.html
@@ -6,6 +6,13 @@
   function ClickOpenLinkInNewWindow() {
     var eventObject = document.createEvent("MouseEvents");

[mmenke, 2011/08/09 14:54:03]

nit:  Use single quotes in Javascript (double only in HTML).

[cbentzel, 2011/08/09 15:42:39]

Done.

     eventObject.initMouseEvent('click');
+    document.getElementById("toClickTarget").dispatchEvent(eventObject);
+    return true;
+  }
+
+  function ClickOpenLink() {
+    var eventObject = document.createEvent("MouseEvents");
+    eventObject.initMouseEvent('click');
     document.getElementById("toClick").dispatchEvent(eventObject);
     return true;
   }
@@ -21,7 +28,8 @@
 <script>
   document.write('<link rel="prerender" href="REPLACE_WITH_PRERENDER_URL"/>');
 </script>
-<a target="_blank" id="toClick"
-   href="REPLACE_WITH_PRERENDER_URL">Link To Click</a>
+<a target="_blank" id="toClickTarget"
+   href="REPLACE_WITH_PRERENDER_URL">Link To click in new window</a>
+<a id="toClick" href="REPLACE_WITH_PRERENDER_URL">Link to click</a>
 </body>
 </html>