[Fetch][WIP] Support blob:, about:, and data: URLs.

LayoutTests/http/tests/fetch/workers/thorough/scheme-blob.html

Index: LayoutTests/http/tests/fetch/workers/thorough/scheme-blob.html
diff --git a/LayoutTests/http/tests/fetch/workers/thorough/auth-nocors.html b/LayoutTests/http/tests/fetch/workers/thorough/scheme-blob.html
similarity index 92%
copy from LayoutTests/http/tests/fetch/workers/thorough/auth-nocors.html
copy to LayoutTests/http/tests/fetch/workers/thorough/scheme-blob.html
index c1e23f3d646054aeee9f176de1346e6eb1cf51a4..b2aca56fd482978b6b741c83e353fe0f3b37a52d 100644
--- a/LayoutTests/http/tests/fetch/workers/thorough/auth-nocors.html
+++ b/LayoutTests/http/tests/fetch/workers/thorough/scheme-blob.html
@@ -11,7 +11,7 @@
 var host_info = get_host_info();
 function start(t) {
   fetch_tests_from_worker(
-    new Worker('/fetch/script-tests/thorough/auth-nocors.js?'));
+    new Worker('/fetch/script-tests/thorough/scheme-blob.js?'));
   t.done();
 }
 function init(test) {