Index: third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/test-helpers.sub.js |
diff --git a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/test-helpers.sub.js b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/test-helpers.sub.js |
index b0ffbd40625c93a882740771bb967149c13023e0..1d7643a71e9142df6052b901df9ebf94aa97327f 100644 |
--- a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/test-helpers.sub.js |
+++ b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/test-helpers.sub.js |
@@ -52,6 +52,7 @@ function unreached_rejection(test, prefix) { |
function with_iframe(url) { |
return new Promise(function(resolve) { |
var frame = document.createElement('iframe'); |
+ frame.className = 'test-iframe'; |
frame.src = url; |
frame.onload = function() { resolve(frame); }; |
document.body.appendChild(frame); |