Be able to print items that do window.print(); window.close() (airline tix e.g.)

chrome/test/data/webui/test_api.js

Index: chrome/test/data/webui/test_api.js
diff --git a/chrome/test/data/webui/test_api.js b/chrome/test/data/webui/test_api.js
index fb8108b93f85acf17551dd4a609e0500aa39986e..17130d827e79528b1eb1258c9cdbbfb9b1347122 100644
--- a/chrome/test/data/webui/test_api.js
+++ b/chrome/test/data/webui/test_api.js
@@ -63,6 +63,14 @@ var testing = {};
     browsePrintPreload: null,
 
     /**
+     * When false, indicate to the browsertest not to print but still to wait
+     * for a new tab for the case where the browsed-to page will cause a print,
+     * with window.print().
+     * @type {boolean}
+     **/
+    print: true,
+
+    /**
      * When set to a function, will be called in the context of the test
      * generation inside the function, and before any generated C++.
      * @type {function(string,string)}