MD Bookmarks: Add right-click context menu to sidebar folders

chrome/browser/resources/md_bookmarks/command_manager.js

Index: chrome/browser/resources/md_bookmarks/command_manager.js
diff --git a/chrome/browser/resources/md_bookmarks/command_manager.js b/chrome/browser/resources/md_bookmarks/command_manager.js
index d1a09f8bd1810fa0626ff81cb422256ff91540df..cc3758e080f67f9856e6393e1f806b40c6a26cf7 100644
--- a/chrome/browser/resources/md_bookmarks/command_manager.js
+++ b/chrome/browser/resources/md_bookmarks/command_manager.js
@@ -89,9 +89,10 @@ cr.define('bookmarks', function() {
      * Commands will execute on the currently selected items.

[calamity, 2017/06/13 05:54:25]

Update comment.

[tsergeant, 2017/06/13 07:01:54]

Done.

      * @param {number} x
      * @param {number} y
+     * @param {Set<string>=} items
      */
-    openCommandMenuAtPosition: function(x, y) {
-      this.menuIds_ = this.getState().selection.items;
+    openCommandMenuAtPosition: function(x, y, items) {
+      this.menuIds_ = items || this.getState().selection.items;
       /** @type {!CrActionMenuElement} */ (this.$.dropdown)
           .showAtPosition({top: y, left: x});
     },