[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 3f7470cf909a51deada4933263bbc4c6a1eaadf2..0d3c8b65bdf4471f3e6b3a2de4e1c9b9bc5138f6 100644
--- a/chrome/test/data/webui/md_bookmarks/store_test.js
+++ b/chrome/test/data/webui/md_bookmarks/store_test.js
@@ -251,6 +251,29 @@ 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.
+    var parent = store.idToNodeMap_['8'];
+    var id = '9';
+    store.onBookmarkCreated_(id, createItem(id, {parentId: parent.id}));
+    var lastIndex = parent.children.length - 1;
+    var node = store.idToNodeMap_[id];
+    assertEquals(node, parent.children[lastIndex]);
+    assertEquals(parent.path + '.children.#' + lastIndex, node.path);
+    assertTrue('url' in node);
+
+    // Create a folder.
+    var id = '10';
+    store.onBookmarkCreated_(id, createFolder(id, [], {parentId: parent.id}));
+    lastIndex = parent.children.length - 1;
+    node = store.idToNodeMap_[id];
+    assertEquals(node, parent.children[lastIndex]);
+    assertEquals(parent.path + '.children.#' + lastIndex, node.path);
+    assertFalse('url' in node);
+  });
+
   //////////////////////////////////////////////////////////////////////////////
   // search tests: