MD Settings: Hide sections in guest mode

chrome/browser/resources/settings/a11y_page/a11y_page.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-light.html">
 <link rel="import" href="../i18n_setup.html">
 <link rel="import" href="../settings_shared_css.html">
 
 <if expr="chromeos">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
 <link rel="import" href="manage_a11y_page.html">
 <link rel="import" href="../settings_page/settings_animated_pages.html">
 <link rel="import" href="../settings_page/settings_subpage.html">
 </if>
 
 <dom-module id="settings-a11y-page">
   <template>
     <style include="settings-shared"></style>
 <if expr="chromeos">
     <settings-animated-pages id="pages" current-route="{{currentRoute}}"
         section="a11y">
       <neon-animatable route-path="default">
         <div class="settings-box first">
           <div class="start">$i18n{optionsInMenuLabel}</div>
           <paper-toggle-button id="optionsInMenuToggle"
               checked="{{prefs.settings.a11y.enable_menu.value}}">
           </paper-toggle-button>
         </div>
-        <div id="subpage-trigger" class="settings-box two-line"
-            on-tap="onManageAccessibilityFeaturesTap_" actionable>
-          <div class="start">
-            $i18n{manageAccessibilityFeatures}
-            <div class="secondary">$i18n{moreFeaturesLinkDescription}</div>
+        <template is="dom-if" if="[[!isGuest_]]">
+          <div id="subpage-trigger" class="settings-box two-line"
+              on-tap="onManageAccessibilityFeaturesTap_" actionable>
+            <div class="start">
+              $i18n{manageAccessibilityFeatures}
+              <div class="secondary">$i18n{moreFeaturesLinkDescription}</div>
+            </div>
+            <button class="subpage-arrow" is="paper-icon-button-light"></button>
           </div>
-          <button class="subpage-arrow" is="paper-icon-button-light"></button>
-        </div>
+        </template>
       </neon-animatable>
+
       <template is="dom-if" route-path="/manageAccessibility">
         <settings-subpage
             associated-control="[[$$('#subpage-trigger')]]"
             page-title="$i18n{manageAccessibilityFeatures}">
           <settings-manage-a11y-page prefs="{{prefs}}">
           </settings-manage-a11y-page>
         </settings-subpage>
       </template>
     </settings-animated-pages>
 </if>
 
 <if expr="not chromeos">
     <div class="settings-box first two-line" on-tap="onMoreFeaturesTap_"
         actionable>
       <div class="start">
         $i18n{moreFeaturesLink}
         <div class="secondary">$i18n{a11yWebStore}</div>
       </div>
       <button class="icon-external" is="paper-icon-button-light"></button>
     </div>
 </if>
 
   </template>
   <script src="a11y_page.js"></script>
 </dom-module>