MD Settings: Use FireWebUIListener() helper wherever possible.

chrome/browser/ui/webui/settings/protocol_handlers_handler.cc

Index: chrome/browser/ui/webui/settings/protocol_handlers_handler.cc
diff --git a/chrome/browser/ui/webui/settings/protocol_handlers_handler.cc b/chrome/browser/ui/webui/settings/protocol_handlers_handler.cc
index c851eb51e1356e54c40dd006b685bcc6d7396e9a..701fdad9632a2f67618c2b69b35667b803f1ef10 100644
--- a/chrome/browser/ui/webui/settings/protocol_handlers_handler.cc
+++ b/chrome/browser/ui/webui/settings/protocol_handlers_handler.cc
@@ -129,11 +129,8 @@ void ProtocolHandlersHandler::UpdateHandlerList() {
 
   std::unique_ptr<base::ListValue> ignored_handlers(new base::ListValue());
   GetIgnoredHandlers(ignored_handlers.get());
-  CallJavascriptFunction("cr.webUIListenerCallback",
-                         base::Value("setProtocolHandlers"), handlers);
-  CallJavascriptFunction("cr.webUIListenerCallback",
-                         base::Value("setIgnoredProtocolHandlers"),
-                         *ignored_handlers);
+  FireWebUIListener("setProtocolHandlers", handlers);
+  FireWebUIListener("setIgnoredProtocolHandlers", *ignored_handlers);
 }
 
 void ProtocolHandlersHandler::HandleObserveProtocolHandlers(
@@ -150,9 +147,8 @@ void ProtocolHandlersHandler::HandleObserveProtocolHandlersEnabledState(
 }
 
 void ProtocolHandlersHandler::SendHandlersEnabledValue() {
-  CallJavascriptFunction("cr.webUIListenerCallback",
-                         base::Value("setHandlersEnabled"),
-                         base::Value(GetProtocolHandlerRegistry()->enabled()));
+  FireWebUIListener("setHandlersEnabled",
+                    base::Value(GetProtocolHandlerRegistry()->enabled()));
 }
 
 void ProtocolHandlersHandler::HandleRemoveHandler(const base::ListValue* args) {