Introduce incognito preference settings.

chrome/browser/ui/browser.cc

 // Copyright (c) 2011 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/browser.h"
 
 #if defined(OS_WIN)
 #include <shellapi.h>
 #include <windows.h>
 #endif  // OS_WIN
@@ skipping 267 matching lines @@
 #endif
 
   SessionService* session_service = profile_->GetSessionService();
   if (session_service)
     session_service->WindowClosed(session_id_);
 
   TabRestoreService* tab_restore_service = profile()->GetTabRestoreService();
   if (tab_restore_service)
     tab_restore_service->BrowserClosed(this);
 
+  encoding_auto_detect_.Destroy();
+  printing_enabled_.Destroy();
+  dev_tools_disabled_.Destroy();
+  instant_enabled_.Destroy();
+  use_vertical_tabs_.Destroy();
+
   if (profile_->IsOffTheRecord() &&
       !BrowserList::IsOffTheRecordSessionActive()) {
     // An off-the-record profile is no longer needed, this indirectly
     // frees its cache and cookies.
     profile_->GetOriginalProfile()->DestroyOffTheRecordProfile();
   }
 
   // There may be pending file dialogs, we need to tell them that we've gone
   // away so they don't try and call back to us.
   if (select_file_dialog_.get())
@@ skipping 3964 matching lines @@
     // The page transition below is only for the purpose of inserting the tab.
     browser->AddTab(view_source_contents, PageTransition::LINK);
   }
 
   if (profile_->HasSessionService()) {
     SessionService* session_service = profile_->GetSessionService();
     if (session_service)
       session_service->TabRestored(&view_source_contents->controller(), false);
   }
 }