[MD settings] include source of policy for content settings

chrome/browser/ui/webui/site_settings_helper.h

Index: chrome/browser/ui/webui/site_settings_helper.h
diff --git a/chrome/browser/ui/webui/site_settings_helper.h b/chrome/browser/ui/webui/site_settings_helper.h
index 4bb415ab252ebfd3800df947eedd9708089346cb..bc3b51aaa760f83ad5c0fd94a654d792fcac7025 100644
--- a/chrome/browser/ui/webui/site_settings_helper.h
+++ b/chrome/browser/ui/webui/site_settings_helper.h
@@ -88,6 +88,14 @@ void GetExceptionsFromHostContentSettingsMap(
     const std::string* filter,
     base::ListValue* exceptions);
 
+// Fills in object saying what the current settings is for the category (such as
+// enabled or blocked) and the source of that setting (such preference, policy,
+// or extension).
+void GetContentCategorySetting(
+    const HostContentSettingsMap* map,
+    ContentSettingsType content_type,
+    base::DictionaryValue* object);
+
 // Returns exceptions constructed from the policy-set allowed URLs
 // for the content settings |type| mic or camera.
 void GetPolicyAllowedUrls(