[Policy Experimental] Add "recommended" policies for URL exceptions.

chrome/browser/ui/webui/options/content_settings_handler.cc

Index: chrome/browser/ui/webui/options/content_settings_handler.cc
diff --git a/chrome/browser/ui/webui/options/content_settings_handler.cc b/chrome/browser/ui/webui/options/content_settings_handler.cc
index 3f17e4b2b13b8e8181f4dfd575d70115193049a8..29c7e92b15ec3a73a040915cd22be5e38a529d1a 100644
--- a/chrome/browser/ui/webui/options/content_settings_handler.cc
+++ b/chrome/browser/ui/webui/options/content_settings_handler.cc
@@ -849,16 +849,27 @@ void ContentSettingsHandler::UpdateSettingDefaultFromModel(
     }
   }
 
+  ContentSetting recommended_default_setting =
+      GetContentSettingsMap()->GetRecommendedDefaultContentSetting(type);
+
   base::DictionaryValue filter_settings;
 
+  std::string group_name = ContentSettingsTypeToGroupName(type);
+
   std::string setting_string =
       content_settings::ContentSettingToString(default_setting);
   DCHECK(!setting_string.empty());
 
-  filter_settings.SetString(ContentSettingsTypeToGroupName(type) + ".value",
-                            setting_string);
-  filter_settings.SetString(
-      ContentSettingsTypeToGroupName(type) + ".managedBy", provider_id);
+  filter_settings.SetString(group_name + ".value", setting_string);
+
+  std::string recommended_setting_string =
+      content_settings::ContentSettingToString(recommended_default_setting);
+  DCHECK(!recommended_setting_string.empty());
+
+  filter_settings.SetString(group_name + ".recommendedValue",
+                            recommended_setting_string);
+
+  filter_settings.SetString(group_name + ".managedBy", provider_id);
 
   web_ui()->CallJavascriptFunction(
       "ContentSettings.setContentFilterSettingsValue", filter_settings);