MD Bookmarks: Add basic page features to new data-flow system

chrome/browser/resources/md_bookmarks/types.js

Index: chrome/browser/resources/md_bookmarks/types.js
diff --git a/chrome/browser/resources/md_bookmarks/types.js b/chrome/browser/resources/md_bookmarks/types.js
index 3889578e430a28b4f2fd1b46edd9d5f50be4931c..3494f31192c99ad79142b8e2b39f51012eadc327 100644
--- a/chrome/browser/resources/md_bookmarks/types.js
+++ b/chrome/browser/resources/md_bookmarks/types.js
@@ -6,7 +6,36 @@
  * @fileoverview Closure typedefs for MD Bookmarks.
  */
 
-/** @typedef {!Object} */
+/**
+ * A normalized version of chrome.bookmarks.BookmarkTreeNode.
+ * @typedef{{
+ *   id: string,
+ *   parentId: (string|undefined),
+ *   url: (string|undefined),
+ *   title: string,
+ *   dateAdded: (number|undefined),
+ *   dateGroupModified: (number|undefined),
+ *   unmodifiable: (string|undefined),
+ *   children: (!Array<string>|undefined),
+ * }}
+ */
+var BookmarkNode;
+
+/**
+ * @typedef{!Object<string, BookmarkNode>}
+ */
+var NodeList;
+
+/** @typedef {!Object<string, boolean>} */
+var ClosedFolderState;
+
+/**
+ * @typedef{{
+ *   nodes: NodeList,
+ *   selectedFolder: ?string,
+ *   closedFolders: ClosedFolderState,
+ * }}
+ */
 var BookmarksPageState;
 
 /** @typedef {{name: string}} */