Add script to remove prefixed CSS from third_party/polymer.

third_party/polymer/v1_0/components-chromium/paper-styles/classes/global.html

 <!--
 @license
 Copyright (c) 2015 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 rel="import" href="../paper-styles-classes.html">
 
 <!--
 A set of base styles that are applied to the document and standard elements that
 match the Material Design spec.
 -->
 <style>
 /*
 Note that there is a lot of style duplication here. The hope is that the Polymer
 0.8 styling solution will allow for inheritance of properties so that we can
 eventually avoid it.
 */
 
 /* Mixins */
 
 /* [paper-font] */
 body {
   font-family: 'Roboto', 'Noto', sans-serif;
-  -webkit-font-smoothing: antialiased;  /* OS X subpixel AA bleed bug */
 }
 
 /* [paper-font=display2] */
 h1 {
   font-size: 45px;
   font-weight: 400;
   letter-spacing: -.018em;
   line-height: 48px;
 }
 
@@ skipping 48 matching lines @@
 
 h1, h2, h3, h4, h5, h6, a {
   text-rendering: optimizeLegibility;
 }
 
 a {
   text-decoration: none;
 }
 
 </style>