[preload] Mandatory `as` value and related spec alignments

third_party/WebKit/LayoutTests/http/tests/security/link-crossorigin-preload-use-credentials.html

Index: third_party/WebKit/LayoutTests/http/tests/security/link-crossorigin-preload-use-credentials.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/security/link-crossorigin-preload-use-credentials.html b/third_party/WebKit/LayoutTests/http/tests/security/link-crossorigin-preload-use-credentials.html
index b0589cdb4c18a820b1b5bfe8dd1191daa69d8b2e..373f248704f2b22e011bc94abf49f7f86de869b9 100644
--- a/third_party/WebKit/LayoutTests/http/tests/security/link-crossorigin-preload-use-credentials.html
+++ b/third_party/WebKit/LayoutTests/http/tests/security/link-crossorigin-preload-use-credentials.html
@@ -12,11 +12,12 @@
     var credentialSpecificDynamicLoad = false;
     var credentialStarDynamicError = false;
 </script>
-<link crossorigin="use-credentials" rel="preload" href="http://localhost:8080/security/resources/abe-allow-credentials.php" onload="credentialSpecificMarkupLoad = true;">
-<link crossorigin="use-credentials" rel="preload" href="http://localhost:8080/security/resources/abe-allow-star.php" onerror="credentialStarMarkupError = true;">
+<link crossorigin="use-credentials" rel="preload" as="fetch" href="http://localhost:8080/security/resources/abe-allow-credentials.php" onload="credentialSpecificMarkupLoad = true;">
+<link crossorigin="use-credentials" rel="preload" as="fetch" href="http://localhost:8080/security/resources/abe-allow-star.php" onerror="credentialStarMarkupError = true;">
 <script>
     var link = document.createElement("link");
     link.rel = "preload";
+    link.as = "fetch";
     link.crossOrigin = "anonymous";
     link.addEventListener("load", function() { credentialSpecificDynamicLoad = true; });
     link.href = "http://localhost:8080/security/resources/abe-allow-credentials.php?1";
@@ -24,6 +25,7 @@
 
     link = document.createElement("link");
     link.rel = "preload";
+    link.as = "fetch";
     link.crossOrigin = "use-credentials";
     link.addEventListener("error", function() { credentialStarDynamicError = true; });
     link.href = "http://localhost:8080/security/resources/abe-allow-star.php?1";