Remove PrerenderResourceThrottle and related infrastructure.

chrome/browser/prerender/prerender_manager.cc

 // 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.
 
 #include "chrome/browser/prerender/prerender_manager.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 681 matching lines @@
   DCHECK(CalledOnValidThread());
   return prerendered_tab_contents_set_.count(web_contents) > 0;
 }
 
 bool PrerenderManager::WouldWebContentsBePrerendered(
     WebContents* web_contents) const {
   DCHECK(CalledOnValidThread());
   return would_be_prerendered_tab_contents_set_.count(web_contents) > 0;
 }
 
-bool PrerenderManager::IsOldRenderViewHost(
-    const RenderViewHost* render_view_host) const {
-  for (std::list<TabContentsWrapper*>::const_iterator it =
-           old_tab_contents_list_.begin();
-       it != old_tab_contents_list_.end();
-       ++it) {
-    if ((*it)->web_contents()->GetRenderViewHost() == render_view_host)
-      return true;
-  }
-  return false;
-}
-
 bool PrerenderManager::HasRecentlyBeenNavigatedTo(const GURL& url) {
   DCHECK(CalledOnValidThread());
 
   CleanUpOldNavigations();
   std::list<NavigationRecord>::const_reverse_iterator end = navigations_.rend();
   for (std::list<NavigationRecord>::const_reverse_iterator it =
            navigations_.rbegin();
        it != end;
        ++it) {
     if (it->url_ == url) {
@@ skipping 526 matching lines @@
   if (!render_process_host || !render_process_host->GetBrowserContext())
     return NULL;
   Profile* profile = Profile::FromBrowserContext(
       render_process_host->GetBrowserContext());
   if (!profile)
     return NULL;
   return PrerenderManagerFactory::GetInstance()->GetForProfile(profile);
 }
 
 }  // namespace prerender