Turn on session storage by default.

chrome/renderer/render_thread.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/renderer/render_thread.h"
 
 #include <v8.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 743 matching lines @@
 
   WebRuntimeFeatures::enableApplicationCache(
       !command_line.HasSwitch(switches::kDisableApplicationCache));
 
   WebRuntimeFeatures::enableNotifications(
       !command_line.HasSwitch(switches::kDisableDesktopNotifications));
 
   WebRuntimeFeatures::enableLocalStorage(
       !command_line.HasSwitch(switches::kDisableLocalStorage));
   WebRuntimeFeatures::enableSessionStorage(
-      command_line.HasSwitch(switches::kEnableSessionStorage));
+      !command_line.HasSwitch(switches::kDisableSessionStorage));
 
   WebRuntimeFeatures::enableIndexedDatabase(
       command_line.HasSwitch(switches::kEnableIndexedDatabase));
 
   WebRuntimeFeatures::enableGeolocation(
       command_line.HasSwitch(switches::kEnableGeolocation));
 }
 
 void RenderThread::IdleHandler() {
 #if defined(OS_WIN) && defined(USE_TCMALLOC)
@@ skipping 97 matching lines @@
   spellchecker_->EnableAutoSpellCorrect(auto_spell_correct);
 }
 
 void RenderThread::OnSpellCheckWordAdded(const std::string& word) {
   spellchecker_->WordAdded(word);
 }
 
 void RenderThread::OnSpellCheckEnableAutoSpellCorrect(bool enable) {
   spellchecker_->EnableAutoSpellCorrect(enable);
 }