MD Settings: Use FireWebUIListener() helper wherever possible.

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

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/settings/downloads_handler.h"
 
 #include "base/metrics/user_metrics.h"
 #include "base/values.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 49 matching lines @@
 void DownloadsHandler::HandleInitialize(const base::ListValue* args) {
   AllowJavascript();
   SendAutoOpenDownloadsToJavascript();
 }
 
 void DownloadsHandler::SendAutoOpenDownloadsToJavascript() {
   content::DownloadManager* manager =
       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(
     const base::ListValue* args) {
   base::RecordAction(UserMetricsAction("Options_ResetAutoOpenFiles"));
   content::DownloadManager* manager =
       content::BrowserContext::GetDownloadManager(profile_);
   DownloadPrefs::FromDownloadManager(manager)->ResetAutoOpen();
 }
 
@@ skipping 15 matching lines @@
 void DownloadsHandler::FileSelected(const base::FilePath& path,
                                     int index,
                                     void* params) {
   base::RecordAction(UserMetricsAction("Options_SetDownloadDirectory"));
   PrefService* pref_service = profile_->GetPrefs();
   pref_service->SetFilePath(prefs::kDownloadDefaultDirectory, path);
   pref_service->SetFilePath(prefs::kSaveFileDefaultDirectory, path);
 }
 
 }  // namespace settings