Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/iron-autogrow-textarea/iron-autogrow-textarea.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-behaviors/iron-control-state.html">
-<link rel="import" href="../iron-flex-layout/classes/iron-flex-layout.html">
-<link rel="import" href="../iron-validatable-behavior/iron-validatable-behavior.html">
-<link rel="import" href="../iron-form-element-behavior/iron-form-element-behavior.html">
-
-<!--
-`iron-autogrow-textarea` is an element containing a textarea that grows in height as more
-lines of input are entered. Unless an explicit height or the `maxRows` property is set, it will
-never scroll.
-
-Example:
-
-    <iron-autogrow-textarea id="a1">
-      <textarea id="t1"></textarea>
-    </iron-autogrow-textarea>
-
-Because the `textarea`'s `value` property is not observable, you should use
-this element's `bind-value` instead for imperative updates.
-
-@group Iron Elements
-@hero hero.svg
-@demo demo/index.html
--->
-
-<dom-module id="iron-autogrow-textarea">
-
-  <style>
-    :host {
-      display: inline-block;
-      position: relative;
-      width: 400px;
-      border: 1px solid;
-      padding: 2px;
-      -moz-appearance: textarea;
-      -webkit-appearance: textarea;
-    }
-
-    .mirror-text {
-      visibility: hidden;
-      word-wrap: break-word;
-    }
-
-    textarea {
-      position: relative;
-      outline: none;
-      border: none;
-      resize: none;
-      background: inherit;
-      color: inherit;
-      /* see comments in template */
-      width: 100%;
-      height: 100%;
-      font-size: inherit;
-      font-family: inherit;
-    }
-
-    ::content textarea:invalid {
-      box-shadow: none;
-    }
-
-  </style>
-  <template>
-    <!-- the mirror sizes the input/textarea so it grows with typing -->
-    <div id="mirror" class="mirror-text" aria-hidden="true">&nbsp;</div>
-
-    <!-- size the input/textarea with a div, because the textarea has intrinsic size in ff -->
-    <div class="textarea-container fit">
-      <textarea id="textarea"
-        autocomplete$="[[autocomplete]]"
-        autofocus$="[[autofocus]]"
-        inputmode$="[[inputmode]]"
-        placeholder$="[[placeholder]]"
-        readonly$="[[readonly]]"
-        required$="[[required]]"
-        rows$="[[rows]]"
-        maxlength$="[[maxlength]]"></textarea>
-    </div>
-  </template>
-</dom-module>
-
-<script>
-
-  Polymer({
-
-    is: 'iron-autogrow-textarea',
-
-    behaviors: [
-      Polymer.IronFormElementBehavior,
-      Polymer.IronValidatableBehavior,
-      Polymer.IronControlState
-    ],
-
-    properties: {
-
-      /**
-       * Use this property instead of `value` for two-way data binding.
-       */
-      bindValue: {
-        observer: '_bindValueChanged',
-        type: String
-      },
-
-      /**
-       * The initial number of rows.
-       *
-       * @attribute rows
-       * @type number
-       * @default 1
-       */
-      rows: {
-        type: Number,
-        value: 1,
-        observer: '_updateCached'
-      },
-
-      /**
-       * The maximum number of rows this element can grow to until it
-       * scrolls. 0 means no maximum.
-       *
-       * @attribute maxRows
-       * @type number
-       * @default 0
-       */
-      maxRows: {
-       type: Number,
-       value: 0,
-       observer: '_updateCached'
-      },
-
-      /**
-       * Bound to the textarea's `autocomplete` attribute.
-       */
-      autocomplete: {
-        type: String,
-        value: 'off'
-      },
-
-      /**
-       * Bound to the textarea's `autofocus` attribute.
-       */
-      autofocus: {
-        type: String,
-        value: 'off'
-      },
-
-      /**
-       * Bound to the textarea's `inputmode` attribute.
-       */
-      inputmode: {
-        type: String
-      },
-
-      /**
-       * Bound to the textarea's `name` attribute.
-       */
-      name: {
-        type: String
-      },
-
-      /**
-       * The value for this input, same as `bindValue`
-       */
-      value: {
-        notify: true,
-        type: String,
-        computed: '_computeValue(bindValue)'
-      },
-
-      /**
-       * Bound to the textarea's `placeholder` attribute.
-       */
-      placeholder: {
-        type: String
-      },
-
-      /**
-       * Bound to the textarea's `readonly` attribute.
-       */
-      readonly: {
-        type: String
-      },
-
-      /**
-       * Set to true to mark the textarea as required.
-       */
-      required: {
-        type: Boolean
-      },
-
-      /**
-       * The maximum length of the input value.
-       */
-      maxlength: {
-        type: Number
-      }
-
-    },
-
-    listeners: {
-      'input': '_onInput'
-    },
-
-    /**
-     * Returns the underlying textarea.
-     * @type HTMLTextAreaElement
-     */
-    get textarea() {
-      return this.$.textarea;
-    },
-
-    /**
-     * Returns true if `value` is valid. The validator provided in `validator`
-     * will be used first, if it exists; otherwise, the `textarea`'s validity
-     * is used.
-     * @return {boolean} True if the value is valid.
-     */
-    validate: function() {
-      // Empty, non-required input is valid.
-      if (!this.required && this.value == '') {
-        this.invalid = false;
-        return true;
-      }
-
-      var valid;
-      if (this.hasValidator()) {
-        valid = Polymer.IronValidatableBehavior.validate.call(this, this.value);
-      } else {
-        valid = this.$.textarea.validity.valid;
-        this.invalid = !valid;
-      }
-      this.fire('iron-input-validate');
-      return valid;
-    },
-
-    _update: function() {
-      this.$.mirror.innerHTML = this._valueForMirror();
-
-      var textarea = this.textarea;
-      // If the value of the textarea was updated imperatively, then we
-      // need to manually update bindValue as well.
-      if (textarea && this.bindValue != textarea.value) {
-        this.bindValue = textarea.value;
-      }
-    },
-
-    _bindValueChanged: function() {
-      var textarea = this.textarea;
-      if (!textarea) {
-        return;
-      }
-
-      textarea.value = this.bindValue;
-      this._update();
-      // manually notify because we don't want to notify until after setting value
-      this.fire('bind-value-changed', {value: this.bindValue});
-    },
-
-    _onInput: function(event) {
-      this.bindValue = event.path ? event.path[0].value : event.target.value;
-      this._update();
-    },
-
-    _constrain: function(tokens) {
-      var _tokens;
-      tokens = tokens || [''];
-      // Enforce the min and max heights for a multiline input to avoid measurement
-      if (this.maxRows > 0 && tokens.length > this.maxRows) {
-        _tokens = tokens.slice(0, this.maxRows);
-      } else {
-        _tokens = tokens.slice(0);
-      }
-      while (this.rows > 0 && _tokens.length < this.rows) {
-        _tokens.push('');
-      }
-      return _tokens.join('<br>') + '&nbsp;';
-    },
-
-    _valueForMirror: function() {
-      var input = this.textarea;
-      if (!input) {
-        return;
-      }
-      this.tokens = (input && input.value) ? input.value.replace(/&/gm, '&amp;').replace(/"/gm, '&quot;').replace(/'/gm, '&#39;').replace(/</gm, '&lt;').replace(/>/gm, '&gt;').split('\n') : [''];
-      return this._constrain(this.tokens);
-    },
-
-    _updateCached: function() {
-      this.$.mirror.innerHTML = this._constrain(this.tokens);
-    },
-
-    _computeValue: function() {
-      return this.bindValue;
-    }
-  })
-</script>