Rolling forward https://codereview.chromium.org/1155683008/ which was

third_party/polymer/v0_8/reproduce.sh

-#!/bin/bash
-
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# Reproduces the content of 'components' and 'components-chromium' using the
-# list of dependencies from 'bower.json'. Downloads needed packages and makes
-# Chromium specific modifications. To launch the script you need 'bower',
-# 'crisper', and 'vulcanize' installed on your system.
-
-# IMPORTANT NOTE: The new vulcanize must be installed from
-# https://github.com/Polymer/vulcanize/releases since it isn't on npm yet.
-
-set -e
-
-cd "$(dirname "$0")"
-
-rm -rf components components-chromium
-
-bower install
-
-# These components are needed only for demos and docs.
-rm -rf components/{hydrolysis,marked,marked-element,prism,prism-element,\
-iron-component-page,iron-doc-viewer,webcomponentsjs}
-
-# Remove unused gzipped binary which causes git-cl problems.
-rm components/web-animations-js/web-animations.min.js.gz
-
-# Test and demo directories aren't needed.
-rm -rf components/*/{test,demo}
-rm -rf components/polymer/explainer
-
-# Make checkperms.py happy.
-find components/*/hero.svg -type f -exec chmod -x {} \;
-find components/iron-selector -type f -exec chmod -x {} \;
-
-# Remove carriage returns to make CQ happy.
-find components -type f \( -name \*.html -o -name \*.css -o -name \*.js\
-  -o -name \*.md -o -name \*.sh -o -name \*.json -o -name \*.gitignore\
-  -o -name \*.bat \) -print0 | xargs -0 sed -i -e $'s/\r$//g'
-
-# Resolve a unicode encoding issue in dom-innerHTML.html.
-NBSP=$(python -c 'print u"\u00A0".encode("utf-8")')
-sed -i 's/['"$NBSP"']/\\u00A0/g' components/polymer/polymer-mini.html
-
-./extract_inline_scripts.sh components components-chromium