Remove Polymer 0.5.

third_party/polymer/components/core-animated-pages/transitions/slide-down.html

-<!--
-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
--->
-
-<link href="core-transition-pages.html" rel="import">
-
-<core-style id="slide-down">
-  polyfill-next-selector { content: ':host.slide-down > * [slide-down]'; }
-  :host(.slide-down) ::content > * /deep/ [slide-down] {
-    -webkit-transition: -webkit-transform {{g.transitions.slideDuration || g.transitions.duration}} cubic-bezier(0.4, 0, 0.2, 1);
-    transition: transform {{g.transitions.slideDuration || g.transitions.duration}} cubic-bezier(0.4, 0, 0.2, 1);
-  }
-
-  polyfill-next-selector { content: ':host > .core-selected [slide-down]'; }
-  ::content > .core-selected /deep/ [slide-down] {
-    -webkit-transform: none;
-    transform: none;
-  }
-
-  polyfill-next-selector { content: ':host > [animate]:not(.core-selected) [slide-down]'; }
-  ::content > [animate]:not(.core-selected) /deep/ [slide-down] {
-    -webkit-transform: translateY(-100%);
-    transform: translateY(-100%);
-  }
-</core-style>
-
-<!--
-
-`slide-down` slides an element in the outgoing page from the top of the window and
-slides in an element in the incoming page from the top of the window during a page
-transition. You can configure the duration of the transition with the global variable
-`CoreStyle.g.transitions.slideDuration`.
-
-Example:
-
-    <core-animated-pages transition="slide-down">
-      <section>
-        <div id="div1" slide-down></div>
-      </section>
-      <section></section>
-    </core-animated-pages>
-
-@class slide-down
-@extends core-transition-pages
-@status beta
-@homepage github.io
-
--->
-
-<core-transition-pages id="slide-down" activeClass="slide-down"></core-transition-pages>