Content settings clean-up: Clarify resource identifier & get rid of NO_RESOURCE_IDENTIFIER.

chrome/browser/notifications/platform_notification_service_impl.cc

 // Copyright 2014 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/notifications/platform_notification_service_impl.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/notifications/desktop_notification_profile_util.h"
@@ skipping 161 matching lines @@
   }
 #endif
 
   // No enabled extensions exist, so check the normal host content settings.
   HostContentSettingsMap* host_content_settings_map =
       io_data->GetHostContentSettingsMap();
   ContentSetting setting = host_content_settings_map->GetContentSetting(
       origin,
       origin,
       CONTENT_SETTINGS_TYPE_NOTIFICATIONS,
-      NO_RESOURCE_IDENTIFIER);
+      content_settings::ResourceIdentifier());
 
   if (setting == CONTENT_SETTING_ALLOW)
     return blink::WebNotificationPermissionAllowed;
   if (setting == CONTENT_SETTING_BLOCK)
     return blink::WebNotificationPermissionDenied;
 
   return blink::WebNotificationPermissionDefault;
 }
 
 void PlatformNotificationServiceImpl::DisplayNotification(
@@ skipping 139 matching lines @@
       formatted_origin.push_back(':');
       formatted_origin.append(base::UTF8ToUTF16(origin.port()));
     }
     return formatted_origin;
   }
 
   // TODO(dewittj): Once file:// URLs are passed in to the origin
   // GURL here, begin returning the path as the display name.
   return net::FormatUrl(origin, languages);
 }