Bookmark manager: Pass in explicit targets to the delete and rename commands.

ui/webui/resources/js/cr/ui/menu.js

Index: ui/webui/resources/js/cr/ui/menu.js
diff --git a/ui/webui/resources/js/cr/ui/menu.js b/ui/webui/resources/js/cr/ui/menu.js
index 6784910acb732879261b9cd2c02c6b67698bd4a5..22d93b4dba6db32f07f4e4b3a61be7454d807ddf 100644
--- a/ui/webui/resources/js/cr/ui/menu.js
+++ b/ui/webui/resources/js/cr/ui/menu.js
@@ -221,12 +221,15 @@ cr.define('cr.ui', function() {
         case 'Enter':
         case 'U+0020': // Space
           if (item) {
+            // Store |contextElement| since it'll be removed when handling the
+            // 'activate' event.
+            var contextElement = this.contextElement;
             var activationEvent = cr.doc.createEvent('Event');
             activationEvent.initEvent('activate', true, true);
             activationEvent.originalEvent = e;
             if (item.dispatchEvent(activationEvent)) {
               if (item.command)
-                item.command.execute();
+                item.command.execute(contextElement);
             }
           }
           return true;