Fetch: test Cross-Origin-Resource-Policy: same-site's scheme restriction

Supplements #11171.

For whatwg/fetch#733.

fetch/cross-origin-resource-policy/resources/image.py

@@ -18,4 +18,3 @@ def main(request, response):
     response.writer.end_headers()
 
     response.writer.write(body)
-

fetch/cross-origin-resource-policy/scheme-restriction.any.js

@@ -0,0 +1,7 @@
+// META: script=/common/get-host-info.sub.js
+
+promise_test(t => {
+  return promise_rejects(t,
+                         new TypeError(),
+                         fetch(get_host_info().HTTPS_REMOTE_ORIGIN + "/fetch/cross-origin-resource-policy/resources/hello.py?corp=same-site", { mode: "no-cors" }));
+}, "Cross-Origin-Resource-Policy: same-site blocks retrieving HTTPS from HTTP");

fetch/cross-origin-resource-policy/scheme-restriction.https.window.js

@@ -0,0 +1,13 @@
+// META: script=/common/get-host-info.sub.js
+
+promise_test(t => {
+  const img = new Image();
+  img.src = get_host_info().HTTP_REMOTE_ORIGIN + "/fetch/cross-origin-resource-policy/resources/image.py?corp=same-site";
+  return new Promise((resolve, reject) => {
+    img.onload = resolve;
+    img.onerror = reject;
+    document.body.appendChild(img);
+  }).finally(() => {
+    img.remove();
+  });
+}, "Cross-Origin-Resource-Policy does not block Mixed Content <img>");