MD Bookmarks: Add 'Open' command, to open in either the BMM or in new tabs

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

Index: chrome/test/data/webui/md_bookmarks/test_util.js
diff --git a/chrome/test/data/webui/md_bookmarks/test_util.js b/chrome/test/data/webui/md_bookmarks/test_util.js
index 593610b359f50d3dbe59a69bafff36e1cd350d05..c1b2279b0f42a50f4cbf12f7ab6eb9eede16ba14 100644
--- a/chrome/test/data/webui/md_bookmarks/test_util.js
+++ b/chrome/test/data/webui/md_bookmarks/test_util.js
@@ -54,7 +54,7 @@ function createFolder(id, children, config) {
  * Splices out the item/folder at |index| and adjusts the indices of all the
  * items after that.
  * @param {BookmarkTreeNode} tree
- * @param {Number} index
+ * @param {number} index
  */
 function removeChild(tree, index) {
   tree.children.splice(index, 1);
@@ -99,9 +99,11 @@ function customClick(element, config) {
   var props = {
     bubbles: true,
     cancelable: true,
+    button: 0,
     buttons: 1,
     shiftKey: false,
     ctrlKey: false,
+    detail: 1,
   };
 
   if (config) {
@@ -112,6 +114,8 @@ function customClick(element, config) {
   element.dispatchEvent(new MouseEvent('mousedown', props));
   element.dispatchEvent(new MouseEvent('mouseup', props));
   element.dispatchEvent(new MouseEvent('click', props));
+  if (config && config.detail == 2)
+    element.dispatchEvent(new MouseEvent('dblclick', props));
 }
 
 /**