Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/paper-styles/classes/shadow-layout.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
--->
-<style>
-
-  /*******************************
-            Flex Layout
-  *******************************/
-
-  html /deep/ .layout.horizontal,
-  html /deep/ .layout.horizontal-reverse,
-  html /deep/ .layout.vertical,
-  html /deep/ .layout.vertical-reverse {
-    display: -ms-flexbox;
-    display: -webkit-flex;
-    display: flex;
-  }
-
-  html /deep/ .layout.inline {
-    display: -ms-inline-flexbox;
-    display: -webkit-inline-flex;
-    display: inline-flex;
-  }
-
-  html /deep/ .layout.horizontal {
-    -ms-flex-direction: row;
-    -webkit-flex-direction: row;
-    flex-direction: row;
-  }
-
-  html /deep/ .layout.horizontal-reverse {
-    -ms-flex-direction: row-reverse;
-    -webkit-flex-direction: row-reverse;
-    flex-direction: row-reverse;
-  }
-
-  html /deep/ .layout.vertical {
-    -ms-flex-direction: column;
-    -webkit-flex-direction: column;
-    flex-direction: column;
-  }
-
-  html /deep/ .layout.vertical-reverse {
-    -ms-flex-direction: column-reverse;
-    -webkit-flex-direction: column-reverse;
-    flex-direction: column-reverse;
-  }
-
-  html /deep/ .layout.wrap {
-    -ms-flex-wrap: wrap;
-    -webkit-flex-wrap: wrap;
-    flex-wrap: wrap;
-  }
-
-  html /deep/ .layout.wrap-reverse {
-    -ms-flex-wrap: wrap-reverse;
-    -webkit-flex-wrap: wrap-reverse;
-    flex-wrap: wrap-reverse;
-  }
-
-  html /deep/ .flex-auto {
-    -ms-flex: 1 1 auto;
-    -webkit-flex: 1 1 auto;
-    flex: 1 1 auto;
-  }
-
-  html /deep/ .flex-none {
-    -ms-flex: none;
-    -webkit-flex: none;
-    flex: none;
-  }
-
-  html /deep/ .flex,
-  html /deep/ .flex-1 {
-    -ms-flex: 1;
-    -webkit-flex: 1;
-    flex: 1;
-  }
-
-  html /deep/ .flex-2 {
-    -ms-flex: 2;
-    -webkit-flex: 2;
-    flex: 2;
-  }
-
-  html /deep/ .flex-3 {
-    -ms-flex: 3;
-    -webkit-flex: 3;
-    flex: 3;
-  }
-
-  html /deep/ .flex-4 {
-    -ms-flex: 4;
-    -webkit-flex: 4;
-    flex: 4;
-  }
-
-  html /deep/ .flex-5 {
-    -ms-flex: 5;
-    -webkit-flex: 5;
-    flex: 5;
-  }
-
-  html /deep/ .flex-6 {
-    -ms-flex: 6;
-    -webkit-flex: 6;
-    flex: 6;
-  }
-
-  html /deep/ .flex-7 {
-    -ms-flex: 7;
-    -webkit-flex: 7;
-    flex: 7;
-  }
-
-  html /deep/ .flex-8 {
-    -ms-flex: 8;
-    -webkit-flex: 8;
-    flex: 8;
-  }
-
-  html /deep/ .flex-9 {
-    -ms-flex: 9;
-    -webkit-flex: 9;
-    flex: 9;
-  }
-
-  html /deep/ .flex-10 {
-    -ms-flex: 10;
-    -webkit-flex: 10;
-    flex: 10;
-  }
-
-  html /deep/ .flex-11 {
-    -ms-flex: 11;
-    -webkit-flex: 11;
-    flex: 11;
-  }
-
-  html /deep/ .flex-12 {
-    -ms-flex: 12;
-    -webkit-flex: 12;
-    flex: 12;
-  }
-
-  /* alignment in cross axis */
-
-  html /deep/ .layout.start {
-    -ms-flex-align: start;
-    -webkit-align-items: flex-start;
-    align-items: flex-start;
-  }
-
-  html /deep/ .layout.center,
-  html /deep/ .layout.center-center {
-    -ms-flex-align: center;
-    -webkit-align-items: center;
-    align-items: center;
-  }
-
-  html /deep/ .layout.end {
-    -ms-flex-align: end;
-    -webkit-align-items: flex-end;
-    align-items: flex-end;
-  }
-
-  /* alignment in main axis */
-
-  html /deep/ .layout.start-justified {
-    -ms-flex-pack: start;
-    -webkit-justify-content: flex-start;
-    justify-content: flex-start;
-  }
-
-  html /deep/ .layout.center-justified,
-  html /deep/ .layout.center-center {
-    -ms-flex-pack: center;
-    -webkit-justify-content: center;
-    justify-content: center;
-  }
-
-  html /deep/ .layout.end-justified {
-    -ms-flex-pack: end;
-    -webkit-justify-content: flex-end;
-    justify-content: flex-end;
-  }
-
-  html /deep/ .layout.around-justified {
-    -ms-flex-pack: around;
-    -webkit-justify-content: space-around;
-    justify-content: space-around;
-  }
-
-  html /deep/ .layout.justified {
-    -ms-flex-pack: justify;
-    -webkit-justify-content: space-between;
-    justify-content: space-between;
-  }
-
-  /* self alignment */
-
-  html /deep/ .self-start {
-    -ms-align-self: flex-start;
-    -webkit-align-self: flex-start;
-    align-self: flex-start;
-  }
-
-  html /deep/ .self-center {
-    -ms-align-self: center;
-    -webkit-align-self: center;
-    align-self: center;
-  }
-
-  html /deep/ .self-end {
-    -ms-align-self: flex-end;
-    -webkit-align-self: flex-end;
-    align-self: flex-end;
-  }
-
-  html /deep/ .self-stretch {
-    -ms-align-self: stretch;
-    -webkit-align-self: stretch;
-    align-self: stretch;
-  }
-
-  /*******************************
-            Other Layout
-  *******************************/
-
-  html /deep/ .block {
-    display: block;
-  }
-
-  /* IE 10 support for HTML5 hidden attr */
-  html /deep/ [hidden] {
-    display: none !important;
-  }
-
-  html /deep/ .invisible {
-    visibility: hidden !important;
-  }
-
-  html /deep/ .relative {
-    position: relative;
-  }
-
-  html /deep/ .fit {
-    position: absolute;
-    top: 0;
-    right: 0;
-    bottom: 0;
-    left: 0;
-  }
-
-  body.fullbleed {
-    margin: 0;
-    height: 100vh;
-  }
-
-  html /deep/ .scroll {
-    -webkit-overflow-scrolling: touch;
-    overflow: auto;
-  }
-
-  .fixed-bottom,
-  .fixed-left,
-  .fixed-right,
-  .fixed-top {
-    position: fixed;
-  }
-
-  html /deep/ .fixed-top {
-    top: 0;
-    left: 0;
-    right: 0;
-  }
-
-  html /deep/ .fixed-right {
-    top: 0;
-    right: 0;
-    botttom: 0;
-  }
-
-  html /deep/ .fixed-bottom {
-    right: 0;
-    bottom: 0;
-    left: 0;
-  }
-
-  html /deep/ .fixed-left {
-    top: 0;
-    botttom: 0;
-    left: 0;
-  }
-
-</style>