[MD settings] icons for clickable rows

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

 <link rel="import" href="chrome://resources/html/polymer.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-dropdown-menu/paper-dropdown-menu-light.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-listbox/paper-listbox.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
 <link rel="import" href="internet_shared_css.html">
 
 <dom-module id="network-nameservers">
   <template>
-    <style include="internet-shared">
-    </style>
+    <style include="internet-shared"></style>
     <div class="settings-box first">
       <div class="start">$i18n{networkSectionNameservers}</div>
       <paper-dropdown-menu-light vertical-align="auto" no-label-float>
         <paper-listbox class="dropdown-content" on-iron-activate="onTypeChange_"
             selected="[[nameserversType_]]" attr-for-selected="value">
           <template is="dom-repeat" items="[[nameserverTypeNames_]]">
             <button class="dropdown-item" role="option" value="[[item]]">
               [[nameserverTypeDesc_(item)]]
             </button>
           </template>
         </paper-listbox>
       </paper-dropdown-menu-light>
     </div>
 
     <div class="settings-box continuation single-column"
         hidden$="[[!nameservers_.length]]">
       <template is="dom-repeat" items="[[nameservers_]]">
         <paper-input-container no-label-float>
           <input id="nameserver[[index]]" is="iron-input" value="[[item]]"
               disabled="[[!canEdit_(editable, nameserversType_)]]"
               on-blur="onValueChange_">
         </paper-input-container>
       </template>
     </div>
   </template>
   <script src="network_nameservers.js"></script>
 </dom-module>