Replicating can_open_windows layout tests runtime flag across OOPIFs.

third_party/WebKit/LayoutTests/http/tests/navigation/resources/no-referrer-helper.php

Index: third_party/WebKit/LayoutTests/http/tests/navigation/resources/no-referrer-helper.php
diff --git a/third_party/WebKit/LayoutTests/http/tests/navigation/resources/no-referrer-helper.php b/third_party/WebKit/LayoutTests/http/tests/navigation/resources/no-referrer-helper.php
index fea93dc809073b327fec6e82150e295cf2e43330..001322d394d583e6d3ff0e7d3b7b1688a41eaf80 100644
--- a/third_party/WebKit/LayoutTests/http/tests/navigation/resources/no-referrer-helper.php
+++ b/third_party/WebKit/LayoutTests/http/tests/navigation/resources/no-referrer-helper.php
@@ -19,7 +19,7 @@ function log(msg)
 }
 
     var consoleWindow = window.open("", "consoleWindow");
-    if (consoleWindow) {
+    if (consoleWindow && consoleWindow.log) {

[Łukasz Anforowicz, 2016/06/06 21:17:14]

The new condition is necessary to check if consoleWindow 1) opened a new window
or 2) found the window named "consoleWindow".
Before this CL, can_open_windows wouldn't propagate and window.open would always
return null, but after this CL window.open started to create a new window
(rather than finding an already existing window - see https://crbug.com/617755)
and throwing an exception when trying to call consoleWindow.log (which doesn't
exist in the new window).

         consoleWindow.log(document.getElementById("referrer").innerText);
         consoleWindow.log("window.opener: " + (window.opener ? window.opener.location : ""));
     }