Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/iron-iconset-svg/iron-iconset-svg.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="../polymer/polymer.html">
-<link rel="import" href="../iron-meta/iron-meta.html">
-
-<script>
-  /**
-   * The `iron-iconset-svg` element allows users to define their own icon sets
-   * that contain svg icons. The svg icon elements should be children of the
-   * `iron-iconset-svg` element. Multiple icons should be given distinct id's.
-   *
-   * Using svg elements to create icons has a few advantages over traditional
-   * bitmap graphics like jpg or png. Icons that use svg are vector based so they
-   * are resolution independent and should look good on any device. They are
-   * stylable via css. Icons can be themed, colorized, and even animated.
-   *
-   * Example:
-   *
-   *     <iron-iconset-svg name="my-svg-icons" size="24">
-   *       <svg>
-   *         <defs>
-   *           <g id="shape">
-   *             <rect x="50" y="50" width="50" height="50" />
-   *             <circle cx="50" cy="50" r="50" />
-   *           </g>
-   *         </defs>
-   *       </svg>
-   *     </iron-iconset-svg>
-   *
-   * This will automatically register the icon set "my-svg-icons" to the iconset
-   * database.  To use these icons from within another element, make a
-   * `iron-iconset` element and call the `byId` method
-   * to retrieve a given iconset. To apply a particular icon inside an
-   * element use the `applyIcon` method. For example:
-   *
-   *     iconset.applyIcon(iconNode, 'car');
-   *
-   * @element iron-iconset-svg
-   * @demo demo/index.html
-   */
-  Polymer({
-
-    is: 'iron-iconset-svg',
-
-    properties: {
-
-      /**
-       * The name of the iconset.
-       *
-       * @attribute name
-       * @type string
-       */
-      name: {
-        type: String,
-        observer: '_nameChanged'
-      },
-
-      /**
-       * The size of an individual icon. Note that icons must be square.
-       *
-       * @attribute iconSize
-       * @type number
-       * @default 24
-       */
-      size: {
-        type: Number,
-        value: 24
-      }
-
-    },
-
-    /**
-     * Construct an array of all icon names in this iconset.
-     *
-     * @return {!Array} Array of icon names.
-     */
-    getIconNames: function() {
-      this._icons = this._createIconMap();
-      return Object.keys(this._icons).map(function(n) {
-        return this.name + ':' + n;
-      }, this);
-    },
-
-    /**
-     * Applies an icon to the given element.
-     *
-     * An svg icon is prepended to the element's shadowRoot if it exists,
-     * otherwise to the element itself.
-     *
-     * @method applyIcon
-     * @param {Element} element Element to which the icon is applied.
-     * @param {string} iconName Name of the icon to apply.
-     * @return {Element} The svg element which renders the icon.
-     */
-    applyIcon: function(element, iconName) {
-      // insert svg element into shadow root, if it exists
-      element = element.root || element;
-      // Remove old svg element
-      this.removeIcon(element);
-      // install new svg element
-      var svg = this._cloneIcon(iconName);
-      if (svg) {
-        var pde = Polymer.dom(element);
-        pde.insertBefore(svg, pde.childNodes[0]);
-        return element._svgIcon = svg;
-      }
-      return null;
-    },
-
-    /**
-     * Remove an icon from the given element by undoing the changes effected
-     * by `applyIcon`.
-     *
-     * @param {Element} element The element from which the icon is removed.
-     */
-    removeIcon: function(element) {
-      // Remove old svg element
-      if (element._svgIcon) {
-        Polymer.dom(element).removeChild(element._svgIcon);
-        element._svgIcon = null;
-      }
-    },
-
-    /**
-     *
-     * When name is changed, register iconset metadata
-     *
-     */
-    _nameChanged: function() {
-      new Polymer.IronMeta({type: 'iconset', key: this.name, value: this});
-    },
-
-    /**
-     * Create a map of child SVG elements by id.
-     *
-     * @return {!Object} Map of id's to SVG elements.
-     */
-    _createIconMap: function() {
-      // Objects chained to Object.prototype (`{}`) have members. Specifically,
-      // on FF there is a `watch` method that confuses the icon map, so we
-      // need to use a null-based object here.
-      var icons = Object.create(null);
-      Polymer.dom(this).querySelectorAll('[id]')
-        .forEach(function(icon) {
-          icons[icon.id] = icon;
-        });
-      return icons;
-    },
-
-    /**
-     * Produce installable clone of the SVG element matching `id` in this
-     * iconset, or `undefined` if there is no matching element.
-     *
-     * @return {Element} Returns an installable clone of the SVG element
-     * matching `id`.
-     */
-    _cloneIcon: function(id) {
-      // create the icon map on-demand, since the iconset itself has no discrete
-      // signal to know when it's children are fully parsed
-      this._icons = this._icons || this._createIconMap();
-      return this._prepareSvgClone(this._icons[id], this.size);
-    },
-
-    /**
-     * @param {Element} sourceSvg
-     * @param {number} size
-     * @return {Element}
-     */
-    _prepareSvgClone: function(sourceSvg, size) {
-      if (sourceSvg) {
-        var svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
-        svg.setAttribute('viewBox', ['0', '0', size, size].join(' '));
-        svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');
-        // TODO(dfreedm): `pointer-events: none` works around https://crbug.com/370136
-        // TODO(sjmiles): inline style may not be ideal, but avoids requiring a shadow-root
-        svg.style.cssText = 'pointer-events: none; display: block; width: 100%; height: 100%;';
-        svg.appendChild(sourceSvg.cloneNode(true)).removeAttribute('id');
-        return svg;
-      }
-      return null;
-    }
-
-  });
-</script>