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

chrome/browser/resources/md_bookmarks/item.html

Index: chrome/browser/resources/md_bookmarks/item.html
diff --git a/chrome/browser/resources/md_bookmarks/item.html b/chrome/browser/resources/md_bookmarks/item.html
index a00cb8f24bf136fa970ab0270719169f412fc3eb..737673d38f9bd3b215415c439a00a8441b6fcacc 100644
--- a/chrome/browser/resources/md_bookmarks/item.html
+++ b/chrome/browser/resources/md_bookmarks/item.html
@@ -16,6 +16,10 @@
         height: 40px;
       }
 
+      :host(:not([is-last-item])) {

[tsergeant, 2017/01/19 05:25:41]

I -think- you can replace is-last-item with a CSS pseudoclass:

:host(:not(:last-child))

which should match every <bookmarks-item> other than the last. 

[angelayang, 2017/01/20 02:33:02]

Thankyou, very useful!

+        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
+      }
+
       #website-title {
         color: var(--primary-text-color);
         cursor: pointer;