[MD Bookmarks] Add a message to empty bookmark lists.

chrome/browser/ui/webui/md_bookmarks/md_bookmarks_ui.cc

Index: chrome/browser/ui/webui/md_bookmarks/md_bookmarks_ui.cc
diff --git a/chrome/browser/ui/webui/md_bookmarks/md_bookmarks_ui.cc b/chrome/browser/ui/webui/md_bookmarks/md_bookmarks_ui.cc
index 5027fa4459ce47d7d6629c3554668dec0f8da500..0c039397e82c131ca30f9cd28f196561922689eb 100644
--- a/chrome/browser/ui/webui/md_bookmarks/md_bookmarks_ui.cc
+++ b/chrome/browser/ui/webui/md_bookmarks/md_bookmarks_ui.cc
@@ -34,6 +34,8 @@ content::WebUIDataSource* CreateMdBookmarksUIHTMLSource(Profile* profile) {
   // Localized strings (alphabetical order).
   AddLocalizedString(source, "clearSearch",
                      IDS_MD_BOOKMARK_MANAGER_CLEAR_SEARCH);
+  AddLocalizedString(source, "emptyList",
+                     IDS_MD_BOOKMARK_MANAGER_EMPTY_LIST);
   AddLocalizedString(source, "menuAddBookmark",
                      IDS_MD_BOOKMARK_MANAGER_MENU_ADD_BOOKMARK);
   AddLocalizedString(source, "menuAddFolder",