Site Settings Desktop: Use 'actionable' more throughout.

chrome/browser/resources/settings/site_settings/usb_devices.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-item/paper-item.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu/paper-menu.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu-button/paper-menu-button.html">
 <link rel="import" href="/i18n_setup.html">
 <link rel="import" href="/settings_shared_css.html">
 <link rel="import" href="/site_settings/site_settings_behavior.html">
 <link rel="import" href="/site_settings/site_settings_prefs_browser_proxy.html">
 
@@ skipping 16 matching lines @@
 
       <div class="list-frame menu-content vertical-list">
         <div class="list-item">
           <div class="favicon-image"
               style$="[[computeSiteIcon(item.origin)]]"></div>
           <div class="middle">[[item.origin]]</div>
             <paper-menu-button>
               <paper-icon-button icon="cr:more-vert"
                   class="dropdown-trigger">
               </paper-icon-button>
-              <paper-menu id="actionMenu" class="dropdown-content"
+              <paper-menu id="actionMenu" class="dropdown-content" actionable
                   on-iron-activate="onActionMenuIronActivate_"
                   attr-for-selected="menu-value">
-                <paper-item menu-value$="[[menuActions_.REMOVE]]">
+                <paper-item menu-value$="[[menuActions_.REMOVE]]" actionable>
                   $i18n{handlerRemove}
                 </paper-item>
               </paper-menu>
             </paper-menu-button>
         </div>
       </div>
     </template>
 
   </template>
   <script src="usb_devices.js"></script>
 </dom-module>