Remember the clear browsing data combo box selection....

chrome/browser/browser.cc

 // Copyright (c) 2006-2008 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/browser.h"
 
 #include <windows.h>
 #include <shellapi.h>
 
 #include "base/command_line.h"
@@ skipping 167 matching lines @@
   prefs->RegisterBooleanPref(prefs::kHomePageIsNewTabPage, true);
   prefs->RegisterIntegerPref(prefs::kCookieBehavior,
       net::CookiePolicy::ALLOW_ALL_COOKIES);
   prefs->RegisterBooleanPref(prefs::kShowHomeButton, false);
   prefs->RegisterStringPref(prefs::kRecentlySelectedEncoding, L"");
   prefs->RegisterBooleanPref(prefs::kDeleteBrowsingHistory, true);
   prefs->RegisterBooleanPref(prefs::kDeleteDownloadHistory, true);
   prefs->RegisterBooleanPref(prefs::kDeleteCache, true);
   prefs->RegisterBooleanPref(prefs::kDeleteCookies, true);
   prefs->RegisterBooleanPref(prefs::kDeletePasswords, false);
+  prefs->RegisterIntegerPref(prefs::kDeleteTimePeriod, 0);
 }
 
 Browser::Browser(const gfx::Rect& initial_bounds,
                  int show_command,
                  Profile* profile,
                  BrowserType::Type type,
                  const std::wstring& app_name)
     : profile_(profile),
       window_(NULL),
       initial_show_command_(show_command),
@@ skipping 1663 matching lines @@
 void Browser::FormatTitleForDisplay(std::wstring* title) {
   size_t current_index = 0;
   size_t match_index;
   while ((match_index = title->find(L'\n', current_index)) !=
          std::wstring::npos) {
     title->replace(match_index, 1, L"");
     current_index = match_index;
   }
 }