Settings: a11y: Just hide 'additional features' link

chrome/browser/resources/settings/a11y_page/manage_a11y_page.html

Index: chrome/browser/resources/settings/a11y_page/manage_a11y_page.html
diff --git a/chrome/browser/resources/settings/a11y_page/manage_a11y_page.html b/chrome/browser/resources/settings/a11y_page/manage_a11y_page.html
index 60dc81b833ae257a2ca7b05dd956bb94afe64ecf..e68a5f60367cdacbdbb9862c1c805d25b7f0c138 100644
--- a/chrome/browser/resources/settings/a11y_page/manage_a11y_page.html
+++ b/chrome/browser/resources/settings/a11y_page/manage_a11y_page.html
@@ -205,17 +205,19 @@
       </settings-toggle-button>
     </div>
 
-    <div class="settings-box two-line" on-tap="onMoreFeaturesTap_" actionable>
-      <div class="start">
-        $i18n{additionalFeaturesTitle}
-        <div class="secondary" id="moreFeaturesSecondary">
-          $i18n{a11yWebStore}
+    <template is="dom-if" if="[[!isGuest_]]">
+      <div class="settings-box two-line" on-tap="onMoreFeaturesTap_" actionable>
+        <div class="start">
+          $i18n{additionalFeaturesTitle}
+          <div class="secondary" id="moreFeaturesSecondary">
+            $i18n{a11yWebStore}
+          </div>
         </div>
+        <button class="icon-external" is="paper-icon-button-light"
+            aria-label="$i18n{additionalFeaturesTitle}"
+            aria-describedby="moreFeaturesSecondary"></button>
       </div>
-      <button class="icon-external" is="paper-icon-button-light"
-          aria-label="$i18n{additionalFeaturesTitle}"
-          aria-describedby="moreFeaturesSecondary"></button>
-    </div>
+    </template>
   </template>
   <script src="manage_a11y_page.js"></script>
 </dom-module>