Replace the cookie monster on navigations instead of reusing it.

chrome/browser/tab_contents/tab_specific_content_settings.cc

 // Copyright (c) 2010 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/tab_contents/tab_specific_content_settings.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browsing_data_appcache_helper.h"
 #include "chrome/browser/browsing_data_database_helper.h"
 #include "chrome/browser/browsing_data_indexed_db_helper.h"
@@ skipping 283 matching lines @@
       local_storages_(new CannedBrowsingDataLocalStorageHelper(profile)),
       session_storages_(new CannedBrowsingDataLocalStorageHelper(profile)) {
 }
 
 TabSpecificContentSettings::LocalSharedObjectsContainer::
     ~LocalSharedObjectsContainer() {
   cookies_->ValidateMap(prerender::PrerenderManager::GetMode());
 }
 
 void TabSpecificContentSettings::LocalSharedObjectsContainer::Reset() {
-  cookies_->ValidateMap(prerender::PrerenderManager::GetMode());
-  cookies_->DeleteAll(false);
-  cookies_->ValidateMap(prerender::PrerenderManager::GetMode());
+  cookies_ = new net::CookieMonster(NULL, NULL);
   appcaches_->Reset();
   databases_->Reset();
   indexed_dbs_->Reset();
   local_storages_->Reset();
   session_storages_->Reset();
 }
 
 CookiesTreeModel*
 TabSpecificContentSettings::LocalSharedObjectsContainer::GetCookiesTreeModel() {
   return new CookiesTreeModel(cookies_,
                               databases_,
                               local_storages_,
                               session_storages_,
                               appcaches_,
                               indexed_dbs_);
 }