"ctrl + double click" acts on the highlighted/selected bookmark list items irrespective of on which…

ui/webui/resources/js/cr/ui/list.js

Index: ui/webui/resources/js/cr/ui/list.js
diff --git a/ui/webui/resources/js/cr/ui/list.js b/ui/webui/resources/js/cr/ui/list.js
index 4fc97ba510614ef5b39a9b931a7a5a0a7b74ed16..72cf7c52e3b9cf6c2f2ce9d65b69ecf838716c09 100644
--- a/ui/webui/resources/js/cr/ui/list.js
+++ b/ui/webui/resources/js/cr/ui/list.js
@@ -467,8 +467,16 @@ cr.define('cr.ui', function() {
       var target = /** @type {HTMLElement} */(e.target);
 
       var ancestor = this.getListItemAncestor(target);
-      if (ancestor)
-        this.activateItemAtIndex(this.getIndexOfListItem(ancestor));
+      var index = -1;
+      if (ancestor) {
+        index = this.getIndexOfListItem(ancestor);
+        this.activateItemAtIndex(index);
+      }
+
+      var sm = this.selectionModel;
+      var indexSelected = sm.getIndexSelected(index);
+      if (!indexSelected)
+        this.handlePointerDownUp_(e);
     },
 
     /**