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

chrome/browser/prerender/prerender_tab_helper.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_
 
 #include "base/time.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
@@ skipping 29 matching lines @@
 
   void UpdateTargetURL(int32 page_id, const GURL& url);
 
  private:
   // The data we store for a hover (time the hover occurred & URL).
   class HoverData;
 
   // Retrieves the PrerenderManager, or NULL, if none was found.
   PrerenderManager* MaybeGetPrerenderManager() const;
 
-  // Checks with the PrerenderManager if the specified URL has been preloaded,
-  // and if so, swap the RenderViewHost with the preload into this TabContents
-  // object. |opener_url| denotes the window.opener url that is set for this
-  // tab and is empty if there is no opener set.
-  bool MaybeUsePrerenderedPage(const GURL& url, const GURL& opener_url);
-
   // Returns whether the TabContents being observed is currently prerendering.
   bool IsPrerendering();
 
   // Records histogram information for the current hover, based on whether
   // it was used or not.  Will not do anything if there is no current hover.
   // Also resets the hover to no hover.
   void MaybeLogCurrentHover(bool was_used);
 
   bool IsTopSite(const GURL& url);
 
@@ skipping 13 matching lines @@
 
   // Current URL being loaded.
   GURL url_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderTabHelper);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_