Write last_modified date to Content Settings in the PrefProvider

chrome/browser/content_settings/host_content_settings_map_factory.cc

Index: chrome/browser/content_settings/host_content_settings_map_factory.cc
diff --git a/chrome/browser/content_settings/host_content_settings_map_factory.cc b/chrome/browser/content_settings/host_content_settings_map_factory.cc
index 1d0547c23e64dba326b52ae59f19117eccfd3441..c1a9a79d48e4064f181e7515d37a71b5934cba60 100644
--- a/chrome/browser/content_settings/host_content_settings_map_factory.cc
+++ b/chrome/browser/content_settings/host_content_settings_map_factory.cc
@@ -6,9 +6,11 @@
 
 #include <utility>
 
+#include "base/feature_list.h"
 #include "chrome/browser/prefs/pref_service_syncable_util.h"
 #include "chrome/browser/profiles/off_the_record_profile_impl.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/common/chrome_features.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/sync_preferences/pref_service_syncable.h"
@@ -74,10 +76,13 @@ scoped_refptr<RefcountedKeyedService>
     GetForProfile(profile->GetOriginalProfile());
   }
 
+  bool store_last_modified = base::FeatureList::IsEnabled(features::kTabsInCbd);
+
   scoped_refptr<HostContentSettingsMap> settings_map(new HostContentSettingsMap(
       profile->GetPrefs(),
       profile->GetProfileType() == Profile::INCOGNITO_PROFILE,
-      profile->GetProfileType() == Profile::GUEST_PROFILE));
+      profile->GetProfileType() == Profile::GUEST_PROFILE,
+      store_last_modified));
 
   sync_preferences::PrefServiceSyncable* pref_service =
       PrefServiceSyncableFromProfile(profile);