MD Settings: Use FireWebUIListener() helper wherever possible.

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

 // Copyright 2016 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/site_settings_handler.h"
 
 #include <algorithm>
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 629 matching lines @@
     Profile* profile, bool was_destroyed) {
   if (!IsJavascriptAllowed())
     return;
 
   // When an incognito profile is destroyed, it sends out the destruction
   // message before destroying, so HasOffTheRecordProfile for profile_ won't
   // return false until after the profile actually been destroyed.
   bool incognito_enabled = profile_->HasOffTheRecordProfile() &&
       !(was_destroyed && profile == profile_->GetOffTheRecordProfile());
 
-  CallJavascriptFunction("cr.webUIListenerCallback",
-                         base::Value("onIncognitoStatusChanged"),
-                         base::Value(incognito_enabled));
+  FireWebUIListener("onIncognitoStatusChanged", base::Value(incognito_enabled));
 }
 
 void SiteSettingsHandler::HandleFetchZoomLevels(const base::ListValue* args) {
   AllowJavascript();
   SendZoomLevels();
 }
 
 void SiteSettingsHandler::SendZoomLevels() {
   if (!IsJavascriptAllowed())
     return;
@@ skipping 63 matching lines @@
     // number.
     int zoom_percent = static_cast<int>(
         content::ZoomLevelToZoomFactor(zoom_level.zoom_level) * 100 + 0.5);
     exception->SetString(kZoom, base::FormatPercent(zoom_percent));
     exception->SetString(
         site_settings::kSource, site_settings::kPreferencesSource);
     // Append the new entry to the list and map.
     zoom_levels_exceptions.Append(std::move(exception));
   }
 
-  CallJavascriptFunction("cr.webUIListenerCallback",
-                         base::Value("onZoomLevelsChanged"),
-                         zoom_levels_exceptions);
+  FireWebUIListener("onZoomLevelsChanged", zoom_levels_exceptions);
 }
 
 void SiteSettingsHandler::HandleRemoveZoomLevel(const base::ListValue* args) {
   CHECK_EQ(1U, args->GetSize());
 
   std::string origin;
   CHECK(args->GetString(0, &origin));
 
   if (origin ==
           l10n_util::GetStringUTF8(IDS_ZOOMLEVELS_CHROME_ERROR_PAGES_LABEL)) {
     origin = content::kUnreachableWebDataURL;
   }
 
   content::HostZoomMap* host_zoom_map;
   host_zoom_map = content::HostZoomMap::GetDefaultForBrowserContext(profile_);
   double default_level = host_zoom_map->GetDefaultZoomLevel();
   host_zoom_map->SetZoomLevelForHost(origin, default_level);
 }
 
 }  // namespace settings