Make it possible to revoke Web Notification exceptions in content settings.

chrome/browser/resources/options/content_settings_exceptions_area.js

Index: chrome/browser/resources/options/content_settings_exceptions_area.js
diff --git a/chrome/browser/resources/options/content_settings_exceptions_area.js b/chrome/browser/resources/options/content_settings_exceptions_area.js
index 2279c197c523490163be3eea58d60970ba39edba..e3e7b5bff3ac90d5ee99ff934557e411a8f5e6fe 100644
--- a/chrome/browser/resources/options/content_settings_exceptions_area.js
+++ b/chrome/browser/resources/options/content_settings_exceptions_area.js
@@ -579,13 +579,10 @@ cr.define('options.contentSettings', function() {
         return;
 
       var dataItem = listItem.dataItem;
-      var args = [listItem.contentType];
-      if (listItem.contentType == 'notifications')
-        args.push(dataItem.origin, dataItem.setting);
-      else
-        args.push(listItem.mode, dataItem.origin, dataItem.embeddingOrigin);
-
-      chrome.send('removeException', args);
+      chrome.send('removeException', [listItem.contentType,
+                                      listItem.mode,
+                                      dataItem.origin,
+                                      dataItem.embeddingOrigin]);
     },
   };