Revert "Polymer elements added to third_party/polymer."

third_party/polymer/components/paper-icon-button/paper-icon-button.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
-The complete set of authors may be found at http://polymer.github.io/AUTHORS
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
-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
--->
-
-<!--
-@group Paper Elements
-`paper-icon-button` is a button with an image placed at the center.
-
-Example:
-
-    <paper-icon-button iconSrc="star.png"></paper-icon-button>
-
-`paper-icon-button` includes a default icon set.  Use `icon` to specify 
-which icon from the icon set to use.
-
-Example:
-
-    <paper-icon-button icon="menu"></paper-icon-button>
-
-The icons provided by `core-icons` are SVG, and you can style them with CSS.
-
-Example:
-
-    <paper-icon-button icon="favorite" style="fill:red;"></paper-icon-button>
-
-See `core-iconset` for more information about how to use a custom icon set.
-
-@element paper-icon-button
-@extends paper-button
-@homepage github.io
--->
-
-<link href="../core-icon/core-icon.html" rel="import">
-<link href="../paper-button/paper-button.html" rel="import">
-
-<polymer-element name="paper-icon-button" extends="paper-button" attributes="fill">
-
-  <template>
-
-    <link href="paper-icon-button.css" rel="stylesheet">
-
-    <shadow></shadow>
-
-  </template>
-
-  <script>
-  
-    Polymer('paper-icon-button', {
-
-      publish: {
-
-        /**
-         * If true, the ripple expands to a square to fill the containing box.
-         *
-         * @attribute fill
-         * @type boolean
-         * @default false
-         */
-        fill: {value: false, reflect: true}
-
-      },
-
-      ready: function() {
-        this.$.ripple.classList.add('recenteringTouch');
-        this.fillChanged();
-      },
-
-      fillChanged: function() {
-        this.$.ripple.classList.toggle('circle', !this.fill);
-      },
-
-      iconChanged: function(oldIcon) {
-        if (!this.label) {
-          this.setAttribute('aria-label', this.icon);
-        }
-      }
-
-    });
-    
-  </script>
-  
-</polymer-element>