[Migrated][Fetch] Support blob: scheme

LayoutTests/http/tests/fetch/script-tests/fetch.js

Index: LayoutTests/http/tests/fetch/script-tests/fetch.js
diff --git a/LayoutTests/http/tests/fetch/script-tests/fetch.js b/LayoutTests/http/tests/fetch/script-tests/fetch.js
index 60974662b01e9fcf195a5b93bcbff316afe1fe4c..d9178b7385ffaafd6c79836cef2300d72279b337 100644
--- a/LayoutTests/http/tests/fetch/script-tests/fetch.js
+++ b/LayoutTests/http/tests/fetch/script-tests/fetch.js
@@ -20,6 +20,31 @@ promise_test(function(t) {
         function() {});
   }, 'fetch non-HTTP(S) CORS');
 
+// Tests for blob: scheme.
+promise_test(function(t) {
+    var url = URL.createObjectURL(new Blob(['fox'], {type: 'text/fox'}));
+    return fetch(url)
+      .then(function(response) {
+          assert_equals(response.status, 200);
+          assert_equals(response.statusText, 'OK');
+          assert_equals(response.headers.get('Content-Type'), 'text/fox');
+          assert_equals(response.headers.get('Content-Length'), '3');
+          assert_equals(size(response.headers), 2);
+          return response.text();
+        })
+      .then(function(text) {
+          assert_equals(text, 'fox');
+        });
+  }, 'fetch blob: URL');
+
+promise_test(function(t) {
+    var url = URL.createObjectURL(new Blob(['fox'], {type: 'text/fox'}));
+    return fetch(url + 'invalid')
+      .then(
+        t.unreached_func('fetching non-existent blob: URL must fail'),
+        function() {});
+  }, 'fetch non-existent blob: URL');
+
 // https://fetch.spec.whatwg.org/#concept-basic-fetch
 // The last statement:
 // Otherwise