MD WebUI: change all <dom-module> to use id="" instead of name=""

chrome/browser/resources/chromeos/login/oobe_welcome_dialog.html

 <!-- Copyright 2016 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. -->
 
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/color.html">
 
 <!--
   OOBE Welcome screen
 -->
-<dom-module name="oobe-welcome-dialog">
+<dom-module id="oobe-welcome-dialog">
   <template>
     <link rel="stylesheet" href="oobe_dialog_host.css">

[dpapad, 2017/03/01 23:20:18]

Unrelated to this CL:
I am curious on how this works (does it?) I thought the only way to include a
CSS file in a custom element was with

link rel="import" type="css"

(which is deprecated https://github.com/Polymer/docs/issues/1347).

[Dan Beam, 2017/03/02 00:00:29]

flattenhtml="true" maybe

https://cs.chromium.org/chromium/src/chrome/browser/browser_resources.grd?typ...

     <link rel="stylesheet" href="oobe_welcome_dialog.css">
     <div class="layout horizontal flex">
       <div class="vertical-margin"></div>
       <div class="welcome-content flex layout vertical center">
         <h1 id="title" i18n-content="networkScreenGreeting"></h1>
         <img id="welcomeIllustration"
             srcset="images/welcome_illustration_1x.png 1x,
                     images/welcome_illustration_2x.png 2x">
         <div hidden="[[!debuggingLinkVisible]]">
           <a href="#" i18n-content="debuggingFeaturesLink"
@@ skipping 21 matching lines @@
               inverse on-tap="onNextClicked_">
             <div i18n-content="welcomeNextButtonText"></div>
           </oobe-text-button>
         </div>
         <div id="bottom-margin"></div>
       </div>
       <div class="vertical-margin"></div>
     </div>
   </template>
 </dom-module>