Remove Polymer 0.5.

third_party/polymer/components/core-animated-pages/transitions/hero-transition.css

-/*
- * @license
- * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
- * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
- * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
- * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
- * Code distributed by Google as part of the polymer project is also
- * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
- */
-
-/* Hide heroes that are not currently transitioning */
-polyfill-next-selector { content: ':host > [animate] [hero]'; }
-::content > [animate] /deep/ [hero], ::content > [animate]::shadow [hero] {
-  visibility: hidden;
-}
-
-polyfill-next-selector { content: ':host > .core-selected[animate] [hero]'; }
-::content > .core-selected[animate] /deep/ [hero],
-::content > .core-selected[animate]::shadow [hero] {
-  visibility: visible;
-  z-index: 10000;
-}