[MD Bookmarks] Add lines between items and no search results message.

chrome/browser/resources/md_bookmarks/list.js

Index: chrome/browser/resources/md_bookmarks/list.js
diff --git a/chrome/browser/resources/md_bookmarks/list.js b/chrome/browser/resources/md_bookmarks/list.js
index 3c1ad92146c8a4b4abc6d344bc40831231ec8cd4..6487c38574b44d262ea95cb75e9f01933027778c 100644
--- a/chrome/browser/resources/md_bookmarks/list.js
+++ b/chrome/browser/resources/md_bookmarks/list.js
@@ -11,6 +11,11 @@ Polymer({
 
     /** @type {Array<BookmarkTreeNode>} */
     displayedList: Array,
+
+    searchTerm: {

[tsergeant, 2017/01/20 02:48:27]

Does it work if you use the short form:

searchTerm: String ?

(we try to avoid setting default values unless they're necessary, since they
cause all the observers to fire)

+      type: String,
+      value: '',
+    },
   },
 
   listeners: {
@@ -81,7 +86,13 @@ Polymer({
   },
 
   /** @private */
-  isListEmpty_: function() {
+  emptyListMessage_: function() {
+    var emptyListMessage = this.searchTerm ? 'noSearchResults' : 'emptyList';
+    return loadTimeData.getString(emptyListMessage);
+  },
+
+  /** @private */
+  isEmptyList_: function() {
     return this.displayedList.length == 0;
-  }
+  },
 });