ntp4: fix most visited dragging onto bookmarks bar

chrome/browser/resources/ntp4/tile_page.js

 // Copyright (c) 2011 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.
 
 cr.define('ntp4', function() {
   'use strict';
 
   // We can't pass the currently dragging tile via dataTransfer because of
   // http://crbug.com/31037
   var currentlyDraggingTile = null;
@@ skipping 80 matching lines @@
      */
     onDragStart_: function(e) {
       // The user may start dragging again during a previous drag's finishing
       // animation.
       if (this.classList.contains('dragging'))
         this.finalizeDrag_();
 
       setCurrentlyDraggingTile(this);
 
       e.dataTransfer.effectAllowed = 'copyMove';
-      // TODO(estade): fill this in.
-      e.dataTransfer.setData('text/plain', 'foo');
 
       // The drag clone is the node we use as a representation during the drag.
       // It's attached to the top level document element so that it floats above
       // image masks.
       this.dragClone = this.cloneNode(true);
       this.dragClone.style.right = '';
       this.dragClone.classList.add('drag-representation');
       $('card-slider-frame').appendChild(this.dragClone);
       this.eventTracker.add(this.dragClone, 'webkitTransitionEnd',
                             this.onDragCloneTransitionEnd_.bind(this));
@@ skipping 896 matching lines @@
      */
     tileMoved: function(draggedTile) {
     },
   };
 
   return {
     getCurrentlyDraggingTile: getCurrentlyDraggingTile,
     TilePage: TilePage,
   };
 });