[HBD] Intercept Flash navigations in popup windows.

chrome/test/data/permissions/flash.js

Index: chrome/test/data/permissions/flash.js
diff --git a/chrome/test/data/permissions/flash.js b/chrome/test/data/permissions/flash.js
index 0331ce251b0ab40d0d4d166842cfe079b122bf4d..be51ef92d1e5cecd4637a08b68e7c364bfe31e64 100644
--- a/chrome/test/data/permissions/flash.js
+++ b/chrome/test/data/permissions/flash.js
@@ -32,4 +32,12 @@ function flashIsEnabled() {
 function flashIsEnabledForPluginWithoutFallback() {
   flashIsEnabledForPlugin(
       document.getElementById('flash-object-no-fallback'));
-}
+}
+
+function spawnPopupAndAwaitLoad() {
+  var popup = window.open(window.location.href);
+  popup.addEventListener('load', function handleLoad() {
+    popup.removeEventListener('load', handleLoad);
+    window.domAutomationController.send(true);
+  });
+}