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

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

Index: chrome/test/data/webui/md_bookmarks/folder_node_test.js
diff --git a/chrome/test/data/webui/md_bookmarks/folder_node_test.js b/chrome/test/data/webui/md_bookmarks/folder_node_test.js
index 7a0a5f980dc330ca18a38a0480391964259fda1c..3ab44ddfbf103aaabd1fef709cb268fbf8f1d81d 100644
--- a/chrome/test/data/webui/md_bookmarks/folder_node_test.js
+++ b/chrome/test/data/webui/md_bookmarks/folder_node_test.js
@@ -131,4 +131,15 @@ suite('<bookmarks-folder-node>', function() {
     assertEquals(null, getNextChild('1', '2', false));
     assertEquals('2', getNextChild('0', '7', true).itemId);
   });
+
+  test('right click opens context menu', function() {
+    var commandManager = new TestCommandManager();
+    document.body.appendChild(commandManager);
+
+    var node = getFolderNode('2');
+    node.$.container.dispatchEvent(new MouseEvent('contextmenu'));
+
+    assertDeepEquals(bookmarks.actions.selectFolder('2'), store.lastAction);
+    commandManager.assertMenuOpenForIds(['2']);
+  });
 });