MD Settings: Lazy load the contents of the "advanced" settings.

chrome/browser/resources/settings/basic_page/basic_page.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="../appearance_page/appearance_page.html">
 <link rel="import" href="../controls/settings_idle_render.html">
-<link rel="import" href="../lazy_load.html">
 <link rel="import" href="../on_startup_page/on_startup_page.html">
 <link rel="import" href="../people_page/people_page.html">
 <link rel="import" href="../reset_page/reset_profile_banner.html">
 <link rel="import" href="../search_page/search_page.html">
 <link rel="import" href="../settings_page/main_page_behavior.html">
 <link rel="import" href="../settings_page/settings_page_visibility.html">
 <link rel="import" href="../settings_page/settings_section.html">
 <link rel="import" href="../settings_page_css.html">
 <link rel="import" href="../settings_vars_css.html">
 
@@ skipping 166 matching lines @@
         <h2 id="toggleContainer">
           <paper-button id="advancedToggle" active="{{advancedToggleExpanded}}"
               aria-active-attribute="aria-expanded" toggles>
             <span>$i18n{advancedPageTitle}</span>
             <iron-icon icon="[[getArrowIcon_(advancedToggleExpanded)]]">
             </iron-icon>
           </paper-button>
         </h2>
       </template>
 
-      <template is="settings-idle-render" id="advancedPageTemplate">
+      <template is="settings-idle-load" id="advancedPageTemplate"
+          url="/lazy_load.html">
         <div id="advancedPage" hidden$="[[!showAdvancedPage_(
             currentRoute_, inSearchMode, hasExpandedSection_,
             advancedToggleExpanded)]]">
 <if expr="chromeos">
           <template is="dom-if" if="[[showPage(pageVisibility.dateTime)]]"
               restamp>
             <settings-section page-title="$i18n{dateTimePageTitle}"
                 section="dateTime">
               <settings-date-time-page prefs="{{prefs}}"
                   page-visibility="[[pageVisibility.dateTime]]">
@@ skipping 64 matching lines @@
                 section="reset">
               <settings-reset-page></settings-reset-page>
             </settings-section>
           </template>
         </div>
       </template>
     </template>
   </template>
   <script src="basic_page.js"></script>
 </dom-module>