Swallow double-click events on menu buttons in Web UI in chrome://bookmarks.

ui/webui/resources/js/cr/ui/menu_button.js

Index: ui/webui/resources/js/cr/ui/menu_button.js
diff --git a/ui/webui/resources/js/cr/ui/menu_button.js b/ui/webui/resources/js/cr/ui/menu_button.js
index e240a3221511e4e1889b3ff2abf1225ca3ef9fae..f99c33034afdc2c32be2e79cd6d99496402c3b41 100644
--- a/ui/webui/resources/js/cr/ui/menu_button.js
+++ b/ui/webui/resources/js/cr/ui/menu_button.js
@@ -44,6 +44,7 @@ cr.define('cr.ui', function() {
     decorate: function() {
       this.addEventListener('mousedown', this);
       this.addEventListener('keydown', this);
+      this.addEventListener('dblclick', this);
 
       // Adding the 'custom-appearance' class prevents widgets.css from changing
       // the appearance of this element.
@@ -154,6 +155,10 @@ cr.define('cr.ui', function() {
         case 'resize':
           this.hideMenu();
           break;
+        case 'dblclick':

[Bernhard Bauer, 2015/04/21 15:54:47]

Can you add a comment like "Don't allow double click events to propagate"?

[Deepak, 2015/04/22 04:14:25]

Done.

+          e.preventDefault();
+          e.stopPropagation();
+          break;
       }
     },