[MD Bookmarks] Implement adding folders and bookmarks from toolbar menu.

chrome/test/data/webui/md_bookmarks/store_test.js

Index: chrome/test/data/webui/md_bookmarks/store_test.js
diff --git a/chrome/test/data/webui/md_bookmarks/store_test.js b/chrome/test/data/webui/md_bookmarks/store_test.js
index 554c23a06b7e00e10c5ff058a3557f17053d6909..22e0d5a669aa91298e01f752088cc0077f45cf4e 100644
--- a/chrome/test/data/webui/md_bookmarks/store_test.js
+++ b/chrome/test/data/webui/md_bookmarks/store_test.js
@@ -261,6 +261,29 @@ suite('<bookmarks-store>', function() {
     assertEquals('http://www.google.com', store.idToNodeMap_['2'].url);
   });
 
+  test('adding a folder updates tree with new node', function() {
+    chrome.bookmarks.create = function(info) {};
+
+    // Create a bookmark at end.
+    var parent = store.idToNodeMap_['8'];
+    var id = '9';
+    var config = {parentId: parent.id, index: parent.children.length};
+    store.onBookmarkCreated_(id, createItem(id, config));
+    var node = store.idToNodeMap_[id];
+    assertEquals(node, parent.children[config.index]);
+    assertEquals(parent.path + '.children.#' + config.index, node.path);
+    assertTrue('url' in node);
+
+    // Create a folder at the beginning.
+    var id = '10';
+    config = {parentId: parent.id, index: 0};
+    store.onBookmarkCreated_(id, createFolder(id, [], config));
+    node = store.idToNodeMap_[id];
+    assertEquals(node, parent.children[config.index]);
+    assertEquals(parent.path + '.children.#' + config.index, node.path);
+    assertFalse('url' in node);
+  });
+
   test('folder gets updated after renaming', function() {
     store.onBookmarkChanged_('3', {'title': 'Main Folder'});
     assertEquals('Main Folder', store.idToNodeMap_['3'].title);