Upstream service worker `fetch` tests to WPT

third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/fetch-csp-iframe.html

Index: third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/fetch-csp-iframe.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/fetch-csp-iframe.html b/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/fetch-csp-iframe.html
deleted file mode 100644
index 33bf0416d5856da3f894468d39457ea7bf58a359..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/fetch-csp-iframe.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<script>
-var meta = document.createElement('meta');
-meta.setAttribute('http-equiv', 'Content-Security-Policy');
-meta.setAttribute('content', decodeURIComponent(location.search.substring(1)));
-document.head.appendChild(meta);
-
-function load_image(url) {
-  return new Promise(function(resolve, reject) {
-      var img = document.createElement('img');
-      document.body.appendChild(img);
-      img.onload = resolve;
-      img.onerror = reject;
-      img.src = url;
-    });
-}
-</script>