Allows prerendering to continue for offline requests even if the url was recently visited.

chrome/browser/prerender/prerender_contents.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_contents.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <functional>
@@ skipping 484 matching lines @@
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 bool PrerenderContents::CheckURL(const GURL& url) {
   if (!url.SchemeIsHTTPOrHTTPS()) {
     Destroy(FINAL_STATUS_UNSUPPORTED_SCHEME);
     return false;
   }
-  if (prerender_manager_->HasRecentlyBeenNavigatedTo(origin(), url)) {
+  if (origin() != ORIGIN_OFFLINE &&
+      prerender_manager_->HasRecentlyBeenNavigatedTo(origin(), url)) {
     Destroy(FINAL_STATUS_RECENTLY_VISITED);
     return false;
   }
   return true;
 }
 
 bool PrerenderContents::AddAliasURL(const GURL& url) {
   if (!CheckURL(url))
     return false;
 
@@ skipping 240 matching lines @@
 void PrerenderContents::AddResourceThrottle(
     const base::WeakPtr<PrerenderResourceThrottle>& throttle) {
   resource_throttles_.push_back(throttle);
 }
 
 void PrerenderContents::AddNetworkBytes(int64_t bytes) {
   network_bytes_ += bytes;
 }
 
 }  // namespace prerender