Prerendered pages are swapped in at browser::Navigate time.

chrome/browser/prerender/prerender_manager.cc

Index: chrome/browser/prerender/prerender_manager.cc
diff --git a/chrome/browser/prerender/prerender_manager.cc b/chrome/browser/prerender/prerender_manager.cc
index 441c87328ed31675e1016067bbffe3a5d02d0bf3..f22564189edf075f97c6362fb6dceaf352769210 100644
--- a/chrome/browser/prerender/prerender_manager.cc
+++ b/chrome/browser/prerender/prerender_manager.cc
@@ -35,7 +35,7 @@
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/render_messages.h"
+#include "chrome/common/prerender_messages.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/devtools_agent_host_registry.h"
@@ -323,9 +323,9 @@ void PrerenderManager::CancelOmniboxPrerenders() {
 }
 
 bool PrerenderManager::MaybeUsePrerenderedPage(WebContents* web_contents,
-                                               const GURL& url,
-                                               const GURL& opener_url) {
+                                               const GURL& url) {
   DCHECK(CalledOnValidThread());
+  DCHECK(!IsWebContentsPrerendering(web_contents));
   RecordNavigation(url);
 
   scoped_ptr<PrerenderContents> prerender_contents(
@@ -333,11 +333,8 @@ bool PrerenderManager::MaybeUsePrerenderedPage(WebContents* web_contents,
   if (prerender_contents.get() == NULL)
     return false;
 
-  // Do not use the prerendered version if the opener url corresponding to the
-  // window.opener property has the same origin as the url.
-  // NOTE: This is broken in the cases where the document domain is modified
-  // using the javascript property for "document.domain".
-  if (opener_url.GetOrigin() == url.GetOrigin()) {
+  // Do not use the prerendered version if there is an opener object.
+  if (web_contents->HasOpener()) {
     prerender_contents.release()->Destroy(FINAL_STATUS_WINDOW_OPENER);
     return false;
   }
@@ -423,8 +420,8 @@ bool PrerenderManager::MaybeUsePrerenderedPage(WebContents* web_contents,
   prerender_contents->set_final_status(FINAL_STATUS_USED);
 
   new_render_view_host->Send(
-      new ChromeViewMsg_SetIsPrerendering(new_render_view_host->GetRoutingID(),
-                                          false));
+      new PrerenderMsg_SetIsPrerendering(new_render_view_host->GetRoutingID(),
+                                         false));
 
   TabContentsWrapper* new_tab_contents =
       prerender_contents->ReleasePrerenderContents();