Remove the force_session cookie option, as it's not used anymore

chrome/browser/ui/webui/cookies_tree_model_util.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/ui/webui/cookies_tree_model_util.h"
 
 #include <vector>
 
 #include "base/i18n/time_formatting.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 101 matching lines @@
       dict->SetString(kKeyPath, cookie.Path());
       dict->SetString(kKeySendFor, cookie.IsSecure() ?
           l10n_util::GetStringUTF8(IDS_COOKIES_COOKIE_SENDFOR_SECURE) :
           l10n_util::GetStringUTF8(IDS_COOKIES_COOKIE_SENDFOR_ANY));
       std::string accessible = cookie.IsHttpOnly() ?
           l10n_util::GetStringUTF8(IDS_COOKIES_COOKIE_ACCESSIBLE_TO_SCRIPT_NO) :
           l10n_util::GetStringUTF8(IDS_COOKIES_COOKIE_ACCESSIBLE_TO_SCRIPT_YES);
       dict->SetString(kKeyAccessibleToScript, accessible);
       dict->SetString(kKeyCreated, UTF16ToUTF8(
           base::TimeFormatFriendlyDateAndTime(cookie.CreationDate())));
-      dict->SetString(kKeyExpires, cookie.DoesExpire() ? UTF16ToUTF8(
+      dict->SetString(kKeyExpires, cookie.IsPersistent() ? UTF16ToUTF8(
           base::TimeFormatFriendlyDateAndTime(cookie.ExpiryDate())) :
           l10n_util::GetStringUTF8(IDS_COOKIES_COOKIE_EXPIRES_SESSION));
 
       break;
     }
     case CookieTreeNode::DetailedInfo::TYPE_DATABASE: {
       dict->SetString(kKeyType, "database");
       dict->SetString(kKeyIcon, "chrome://theme/IDR_COOKIE_STORAGE_ICON");
 
       const BrowsingDataDatabaseHelper::DatabaseInfo& database_info =
@@ skipping 157 matching lines @@
     child = id_map_.Lookup(node_id);
     child_index = parent->GetIndexOf(child);
     if (child_index == -1)
       break;
 
     parent = child;
   }
 
   return child_index >= 0 ? child : NULL;
 }