remove unnecessary paper-item dependency from site_details.

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

Index: chrome/browser/resources/settings/site_settings/site_details.html
diff --git a/chrome/browser/resources/settings/site_settings/site_details.html b/chrome/browser/resources/settings/site_settings/site_details.html
index 9a93225392e5e34e3d04b6f15b6fa215a5e98f74..abaff2edbe6e2e4cd25fe438b74fc22b327a8ebd 100644
--- a/chrome/browser/resources/settings/site_settings/site_details.html
+++ b/chrome/browser/resources/settings/site_settings/site_details.html
@@ -41,19 +41,21 @@
       </div>
       <div class="middle">[[site.originForDisplay]]</div>
     </div>
-    <div id="usage" hidden$="[[!storedData_]]">
-      <div class="settings-box first">
-        <h2>$i18n{siteSettingsUsage}</h2>
+    <template is="dom-if" if="[[storedData_]]">
+      <div id="usage">
+        <div class="settings-box first">
+          <h2>$i18n{siteSettingsUsage}</h2>
+        </div>
+        <div class="list-frame">
+          <div class="list-item" id="storage">
+            <div class="flex">[[storedData_]]</div>
+            <paper-icon-button icon="cr:delete"
+                on-tap="onConfirmClearStorage_"
+                alt="$i18n{siteSettingsDelete}"></paper-icon-button>
+          </div>
+        </div>
       </div>
-      <div class="list-frame">
-        <paper-item id="storage" hidden$="[[!storedData_]]">
-          <div class="flex">[[storedData_]]</div>
-          <paper-icon-button icon="cr:delete"
-              on-tap="onConfirmClearStorage_"
-              alt="$i18n{siteSettingsDelete}"></paper-icon-button>
-        </paper-item>
-      </div>
-    </div>
+    </template>
     <div class="settings-box first">
       <h2>$i18n{siteSettingsPermissions}</h2>
     </div>