Write last_modified date to Content Settings in the PrefProvider

components/content_settings/core/common/content_settings.cc

Index: components/content_settings/core/common/content_settings.cc
diff --git a/components/content_settings/core/common/content_settings.cc b/components/content_settings/core/common/content_settings.cc
index ec1621532d923046acf5d916aaf72ed060168235..298b70d556f6127d2b371b3f9eaa482008b0aae7 100644
--- a/components/content_settings/core/common/content_settings.cc
+++ b/components/content_settings/core/common/content_settings.cc
@@ -83,11 +83,13 @@ ContentSettingPatternSource::ContentSettingPatternSource(
     const ContentSettingsPattern& primary_pattern,
     const ContentSettingsPattern& secondary_pattern,
     ContentSetting setting,
+    base::Time last_modified,
     const std::string& source,
     bool incognito)
     : primary_pattern(primary_pattern),
       secondary_pattern(secondary_pattern),
       setting(setting),
+      last_modified(last_modified),
       source(source),
       incognito(incognito) {}