NTP4: Add ability to drag links to the apps pages.

chrome/browser/resources/ntp4/apps_page.css

 /* 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.
  */
 
 .app {
   position: absolute;
   text-align: center;
 }
 
@@ skipping 33 matching lines @@
   /* We need to ensure there is no animation applied to its position
     (or the drag touch may stop being over top of it */
   -webkit-transition: none !important;
 
   /* Ensure the element has a large z-index so that we can get events
      for it as it moves over other elements.  This is animated as the
      element flys back, so we want a large value that will stay large until
      its almost home.  */
   z-index: 100;
 }
+
+/* Link (bookmark) tiles. */
+.link {
+  display: -webkit-box;
+  position: absolute;
+  -webkit-box-orient: vertical;
+}
+
+.link > * {
+  -webkit-box-flex: 1;
+}
+
+.link span {
+  display: block;
+}