Implemented a policy to match the ClearSiteDataOnExit pref.

chrome/browser/ui/views/options/cookie_filter_page_view.cc

Index: chrome/browser/ui/views/options/cookie_filter_page_view.cc
diff --git a/chrome/browser/ui/views/options/cookie_filter_page_view.cc b/chrome/browser/ui/views/options/cookie_filter_page_view.cc
index ec44bdfe5d944f454cb8fee00258d1a22dc8b2a4..de29ea386df31f84e0d04c9ec0c14cdf80c1d099 100644
--- a/chrome/browser/ui/views/options/cookie_filter_page_view.cc
+++ b/chrome/browser/ui/views/options/cookie_filter_page_view.cc
@@ -88,6 +88,8 @@ void CookieFilterPageView::NotifyPrefChanged(const std::string* pref_name) {
   if (!pref_name || *pref_name == prefs::kClearSiteDataOnExit) {
     clear_on_close_check_->SetChecked(
         clear_site_data_on_exit_.GetValue());
+    clear_on_close_check_->SetEnabled(
+        !clear_site_data_on_exit_.IsManaged());
   }
   if (!pref_name || *pref_name == prefs::kBlockThirdPartyCookies) {
     block_3rdparty_check_->SetChecked(