[MD Bookmarks] Fix drag and drop on Mac.

chrome/test/data/webui/md_bookmarks/dnd_manager_test.js

Index: chrome/test/data/webui/md_bookmarks/dnd_manager_test.js
diff --git a/chrome/test/data/webui/md_bookmarks/dnd_manager_test.js b/chrome/test/data/webui/md_bookmarks/dnd_manager_test.js
index fea2865b19f24152a353d573e754e121dc646259..15f6f9a0d38e45ab8a8c3860be95e8d2fbfaa8d9 100644
--- a/chrome/test/data/webui/md_bookmarks/dnd_manager_test.js
+++ b/chrome/test/data/webui/md_bookmarks/dnd_manager_test.js
@@ -109,7 +109,7 @@ suite('drag and drop', function() {
     list = app.$$('bookmarks-list');
     rootFolderNode = app.$$('bookmarks-folder-node');
     dndManager = app.dndManager_;
-    dndManager.dropIndicator_.disableTimeoutForTesting();
+    dndManager.disableTimeoutsForTesting();
     Polymer.dom.flush();
   });