ChromeOS OOBE: switch from iron-dropdown to <select>.

chrome/browser/resources/settings/internet_page/network_proxy.html

 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_network_behavior.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_network_indicator.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-checkbox/paper-checkbox.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input-container.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
+<link rel="import" href="/settings_vars_css.html">
+<link rel="import" href="chrome://resources/html/md_select_css.html">
 <link rel="import" href="/i18n_setup.html">
-<link rel="import" href="/md_select_css.html">
 <link rel="import" href="/prefs/prefs_behavior.html">
 <link rel="import" href="internet_shared_css.html">
 <link rel="import" href="network_proxy_exclusions.html">
 <link rel="import" href="network_proxy_input.html">
 
 <dom-module id="network-proxy">
   <template>
     <style include="internet-shared md-select">
       cr-policy-network-indicator,
       cr-policy-pref-indicator {
@@ skipping 140 matching lines @@
           </paper-input-container>
           <paper-button on-tap="onAddProxyExclusionTap_">
             $i18n{networkProxyAddException}
           </paper-button>
         </div>
       </div>
     </div>
   </template>
   <script src="network_proxy.js"></script>
 </dom-module>