Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/paper-toolbar/paper-toolbar.html

-<!--
-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="../paper-styles/paper-styles.html">
-
-<!--
-`paper-toolbar` is a horizontal bar containing items that can be used for
-label, navigation, search and actions.  The items place inside the
-`paper-toolbar` are projected into a `class="horizontal center layout"` container inside of
-`paper-toolbar`'s Shadow DOM.  You can use flex attributes to control the items'
-sizing.
-
-Example:
-
-    <paper-toolbar>
-      <paper-icon-button icon="menu" on-tap="menuAction"></paper-icon-button>
-      <div class="title">Title</div>
-      <paper-icon-button icon="more-vert" on-tap="moreAction"></paper-icon-button>
-    </paper-toolbar>
-
-`paper-toolbar` has a standard height, but can made be taller by setting `tall`
-class on the `paper-toolbar`.  This will make the toolbar 3x the normal height.
-
-    <paper-toolbar class="tall">
-      <paper-icon-button icon="menu"></paper-icon-button>
-    </paper-toolbar>
-
-Apply `medium-tall` class to make the toolbar medium tall.  This will make the
-toolbar 2x the normal height.
-
-    <paper-toolbar class="medium-tall">
-      <paper-icon-button icon="menu"></paper-icon-button>
-    </paper-toolbar>
-
-When `tall`, items can pin to either the top (default), middle or bottom.  Use
-`middle` class for middle content and `bottom` class for bottom content.
-
-    <paper-toolbar class="tall">
-      <paper-icon-button icon="menu"></paper-icon-button>
-      <div class="middle title">Middle Title</div>
-      <div class="bottom title">Bottom Title</div>
-    </paper-toolbar>
-
-For `medium-tall` toolbar, the middle and bottom contents overlap and are
-pinned to the bottom.  But `middleJustify` and `bottomJustify` attributes are
-still honored separately.
-
-To make an element completely fit at the bottom of the toolbar, use `fit` along
-with `bottom`.
-
-    <paper-toolbar class="tall">
-      <div id="progressBar" class="bottom fit"></div>
-    </paper-toolbar>
-
-### Styling
-
-The following custom properties and mixins are available for styling:
-
-Custom property | Description | Default
-----------------|-------------|----------
-`--paper-toolbar-background` | Toolbar background color     | `--default-primary-color`
-`--paper-toolbar-color`      | Toolbar foreground color     | `--text-primary-color`
-`--paper-toolbar`            | Mixin applied to the toolbar | `{}`
-
-### Accessibility
-
-`<paper-toolbar>` has `role="toolbar"` by default. Any elements with the class `title` will
-be used as the label of the toolbar via `aria-labelledby`.
-
-@demo demo/index.html
--->
-
-<dom-module id="paper-toolbar">
-
-  <style>
-    :host {
-      /* technical */
-      display: block;
-      position: relative;
-      box-sizing: border-box;
-      -moz-box-sizing: border-box;
-
-      /* size */
-      height: 64px;
-
-      background: var(--paper-toolbar-background, --default-primary-color);
-      color: var(--paper-toolbar-color, --text-primary-color);
-
-      @apply(--paper-toolbar);
-    }
-
-    :host(.animate) {
-      /* transition */
-      transition: height 0.18s ease-in;
-    }
-
-    :host(.medium-tall) {
-      height: 128px;
-    }
-
-    :host(.tall) {
-      height: 192px;
-    }
-
-    .toolbar-tools {
-      position: relative;
-      height: 64px;
-      padding: 0 16px;
-      pointer-events: none;
-    }
-
-    /*
-     * TODO: Where should media query breakpoints live so they can be shared between elements?
-     */
-
-    @media (max-width: 639px) {
-      :host {
-        height: 56px;
-      }
-
-      :host(.medium-tall) {
-        height: 112px;
-      }
-
-      :host(.tall) {
-        height: 168px;
-      }
-
-      .toolbar-tools {
-        height: 56px;
-      }
-    }
-
-    #topBar {
-      position: relative;
-    }
-
-    /* middle bar */
-    #middleBar {
-      position: absolute;
-      top: 0;
-      right: 0;
-      left: 0;
-    }
-
-    :host(.tall) #middleBar,
-    :host(.medium-tall) #middleBar {
-      -webkit-transform: translateY(100%);
-      transform: translateY(100%);
-    }
-
-    /* bottom bar */
-    #bottomBar {
-      position: absolute;
-      right: 0;
-      bottom: 0;
-      left: 0;
-    }
-
-    /*
-     * make elements (e.g. buttons) respond to mouse/touch events
-     *
-     * `.toolbar-tools` disables touch events so multiple toolbars can stack and not
-     * absorb events. All children must have pointer events re-enabled to work as
-     * expected.
-     */
-    .toolbar-tools > ::content > *:not([disabled]) {
-      pointer-events: auto;
-    }
-
-    .toolbar-tools > ::content .title {
-      @apply(--paper-font-title);
-      @apply(--layout-flex);
-
-      pointer-events: none;
-      text-overflow: ellipsis;
-      white-space: nowrap;
-      overflow: hidden;
-
-      /*
-       * Polymer/polymer/issues/1525
-       * --paper-font-title defines a `font-weight`
-       * let's override its value, but we need `important!`
-       * because all mixins are resolved in rule's selector that has higher precedence
-       * than the current selector.
-       */
-      font-weight: 400 !important;
-    }
-
-    /**
-     * TODO: Refactor these selectors
-     * Work in progress.
-     */
-    .toolbar-tools > ::content paper-icon-button[icon=menu] {
-      margin-right: 24px;
-    }
-
-    .toolbar-tools > ::content > .title,
-    .toolbar-tools > ::content[select=".middle"] > .title,
-    .toolbar-tools > ::content[select=".bottom"] > .title {
-      margin-left: 56px;
-    }
-
-    .toolbar-tools > ::content > paper-icon-button + .title,
-    .toolbar-tools > ::content[select=".middle"] paper-icon-button + .title,
-    .toolbar-tools > ::content[select=".bottom"] paper-icon-button + .title {
-      margin-left: 0;
-    }
-
-    .toolbar-tools > ::content > .fit {
-      position: absolute;
-      top: auto;
-      right: 0;
-      bottom: 0;
-      left: 0;
-      width: auto;
-      margin: 0;
-    }
-
-  </style>
-
-  <template>
-
-    <div id="topBar" class$="[[_computeBarClassName(justify)]]">
-      <content select=":not(.middle):not(.bottom)"></content>
-    </div>
-
-    <div id="middleBar" class$="[[_computeBarClassName(middleJustify)]]">
-      <content select=".middle"></content>
-    </div>
-
-    <div id="bottomBar" class$="[[_computeBarClassName(bottomJustify)]]">
-      <content select=".bottom"></content>
-    </div>
-
-  </template>
-
-</dom-module>
-
-<script>
-
-  (function() {
-
-    'use strict';
-
-    function classNames(obj) {
-      var classNames = [];
-      for (var key in obj) {
-        if (obj.hasOwnProperty(key) && obj[key]) {
-          classNames.push(key);
-        }
-      }
-
-      return classNames.join(' ');
-    }
-
-    Polymer({
-
-      is: 'paper-toolbar',
-
-      hostAttributes: {
-        'role': 'toolbar'
-      },
-
-      properties: {
-
-        /**
-         * Controls how the items are aligned horizontally when they are placed
-         * at the bottom.
-         * Options are `start`, `center`, `end`, `justified` and `around`.
-         *
-         * @attribute bottomJustify
-         * @type string
-         * @default ''
-         */
-        bottomJustify: {
-          type: String,
-          value: ''
-        },
-
-        /**
-         * Controls how the items are aligned horizontally.
-         * Options are `start`, `center`, `end`, `justified` and `around`.
-         *
-         * @attribute justify
-         * @type string
-         * @default ''
-         */
-        justify: {
-          type: String,
-          value: ''
-        },
-
-        /**
-         * Controls how the items are aligned horizontally when they are placed
-         * in the middle.
-         * Options are `start`, `center`, `end`, `justified` and `around`.
-         *
-         * @attribute middleJustify
-         * @type string
-         * @default ''
-         */
-        middleJustify: {
-          type: String,
-          value: ''
-        }
-
-      },
-
-      attached: function() {
-        this._observer = this._observe(this);
-        this._updateAriaLabelledBy();
-      },
-
-      detached: function() {
-        if (this._observer) {
-          this._observer.disconnect();
-        }
-      },
-
-      _observe: function(node) {
-        var observer = new MutationObserver(function() {
-          this._updateAriaLabelledBy();
-        }.bind(this));
-        observer.observe(node, {
-          childList: true,
-          subtree: true
-        });
-        return observer;
-      },
-
-      _updateAriaLabelledBy: function() {
-        var labelledBy = [];
-        var contents = Polymer.dom(this.root).querySelectorAll('content');
-        for (var content, index = 0; content = contents[index]; index++) {
-          var nodes = Polymer.dom(content).getDistributedNodes();
-          for (var node, jndex = 0; node = nodes[jndex]; jndex++) {
-            if (node.classList && node.classList.contains('title')) {
-              if (node.id) {
-                labelledBy.push(node.id);
-              } else {
-                var id = 'paper-toolbar-label-' + Math.floor(Math.random() * 10000);
-                node.id = id;
-                labelledBy.push(id);
-              }
-            }
-          }
-        }
-        if (labelledBy.length > 0) {
-          this.setAttribute('aria-labelledby', labelledBy.join(' '));
-        }
-      },
-
-      _computeBarClassName: function(barJustify) {
-        var classObj = {
-          'center': true,
-          'horizontal': true,
-          'layout': true,
-          'toolbar-tools': true
-        };
-
-        // If a blank string or any falsy value is given, no other class name is
-        // added.
-        if (barJustify) {
-          var justifyClassName = (barJustify === 'justified') ?
-              barJustify :
-              barJustify + '-justified';
-
-          classObj[justifyClassName] = true;
-        }
-
-        return classNames(classObj);
-      }
-
-    });
-
-  }());
-
-</script>