MD Settings: Use FireWebUIListener() helper wherever possible.

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

Index: chrome/browser/ui/webui/settings/downloads_handler.cc
diff --git a/chrome/browser/ui/webui/settings/downloads_handler.cc b/chrome/browser/ui/webui/settings/downloads_handler.cc
index fb5442eee72bc79320a903117cef54d778f81d1e..e5acd37e95a75de6f848dd055cb987b819adc77b 100644
--- a/chrome/browser/ui/webui/settings/downloads_handler.cc
+++ b/chrome/browser/ui/webui/settings/downloads_handler.cc
@@ -67,9 +67,8 @@ void DownloadsHandler::SendAutoOpenDownloadsToJavascript() {
       content::BrowserContext::GetDownloadManager(profile_);
   bool auto_open_downloads =
       DownloadPrefs::FromDownloadManager(manager)->IsAutoOpenUsed();
-  CallJavascriptFunction("cr.webUIListenerCallback",
-                         base::Value("auto-open-downloads-changed"),
-                         base::Value(auto_open_downloads));
+  FireWebUIListener("auto-open-downloads-changed",
+                    base::Value(auto_open_downloads));
 }
 
 void DownloadsHandler::HandleResetAutoOpenFileTypes(