[MD settings] lighter weight initializer for protocol handler enabled messages

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

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.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-toggle-button/paper-toggle-button.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_action_menu/cr_action_menu.html">
-
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.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">
 
 <dom-module id="protocol-handlers">
   <template>
     <style include="settings-shared">
       :host {
@@ skipping 47 matching lines @@
         $i18n{handlerSetDefault}
       </button>
       <button class="dropdown-item" role="option" on-tap="onRemoveTap_"
           id="removeButton">
         $i18n{handlerRemove}
       </button>
     </dialog>
   </template>
   <script src="protocol_handlers.js"></script>
 </dom-module>