[MD Bookmarks] Add search.

chrome/browser/resources/md_bookmarks/list.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_action_menu/cr_action_menu.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
 <link rel="import" href="chrome://resources/cr_elements/shared_style_css.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/shadow.html">
 <link rel="import" href="chrome://bookmarks/item.html">
 <link rel="import" href="chrome://bookmarks/shared_style.html">
@@ skipping 49 matching lines @@
       </div>
       <div class="button-container">
         <paper-button class="cancel-button" on-tap="onCancelEditTap_">
           $i18n{cancelEdit}
         </paper-button>
         <paper-button class="action-button" on-tap="onSaveEditTap_">
           $i18n{saveEdit}
         </paper-button>
       </div>
     </dialog>
-    <div id="bookmarksCard">
-      <hidden$="[[isListEmpty_(selectedNode.children.length)]]">
-      <template is="dom-repeat" items="[[selectedNode.children]]" as="item">
+    <div id="bookmarksCard" hidden$="[[isListEmpty_(displayedList.length)]]">
+      <template is="dom-repeat" items="[[displayedList]]" as="item">
         <bookmarks-item item="[[item]]"></bookmarks-item>
       </template>
     </div>
+    <!--TODO(angelayang): add message for no search results found-->

[tsergeant, 2017/01/12 06:45:05]

You can get rid of this TODO

[angelayang, 2017/01/12 07:51:24]

Done.

     <div class="centered-message"
-        hidden$="[[!isListEmpty_(selectedNode.children.length)]]">
+        hidden$="[[!isListEmpty_(displayedList.length)]]">
       $i18n{emptyList}
     </div>
   </template>
   <script src="chrome://bookmarks/list.js"></script>
 </dom-module>