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..06dafe80a8f2a40743ec72de6ab80da7f3d7f243 100644
--- a/chrome/test/data/webui/md_bookmarks/test_util.js
+++ b/chrome/test/data/webui/md_bookmarks/test_util.js
@@ -94,14 +94,17 @@ function normalizeSet(set) {
  * Sends a custom click event to |element|.
  * @param {HTMLElement} element
  * @param {Object=} config
+ * @param {string=} eventname
  */
-function customClick(element, config) {
+function customClick(element, config, eventname) {
   var props = {
     bubbles: true,
     cancelable: true,
+    button: 0,
     buttons: 1,
     shiftKey: false,
     ctrlKey: false,
+    detail: 1,
   };
 
   if (config) {
@@ -109,9 +112,11 @@ function customClick(element, config) {
       props[key] = config[key];
   }
 
+  eventname = eventname || 'click';
+
   element.dispatchEvent(new MouseEvent('mousedown', props));
   element.dispatchEvent(new MouseEvent('mouseup', props));
-  element.dispatchEvent(new MouseEvent('click', props));
+  element.dispatchEvent(new MouseEvent(eventname, props));
 }
 
 /**