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

content/browser/tab_contents/tab_contents.cc

Index: content/browser/tab_contents/tab_contents.cc
diff --git a/content/browser/tab_contents/tab_contents.cc b/content/browser/tab_contents/tab_contents.cc
index 239ec8e563a12c32a38b09ea9d5a437fa7bda632..84d54de9fe2c19aeb528cd3b9c01361336ee28e3 100644
--- a/content/browser/tab_contents/tab_contents.cc
+++ b/content/browser/tab_contents/tab_contents.cc
@@ -265,7 +265,8 @@ TabContents::TabContents(content::BrowserContext* browser_context,
           static_cast<int>(content::kMaximumZoomFactor * 100)),
       temporary_zoom_settings_(false),
       content_restrictions_(0),
-      view_type_(content::VIEW_TYPE_TAB_CONTENTS) {
+      view_type_(content::VIEW_TYPE_TAB_CONTENTS),
+      has_opener_(false) {
   render_manager_.Init(browser_context, site_instance, routing_id);
 
   // We have the initial size of the view be based on the size of the passed in
@@ -1351,6 +1352,10 @@ bool TabContents::GotResponseToLockMouseRequest(bool allowed) {
       GetRenderViewHostImpl()->GotResponseToLockMouseRequest(allowed) : false;
 }
 
+bool TabContents::HasOpener() const {
+  return has_opener_;
+}
+
 bool TabContents::FocusLocationBarByDefault() {
   content::WebUI* web_ui = GetWebUIForCurrentState();
   if (web_ui)