[webcrypto] Require importKey() for JWK to provide data as a Javascript object rather than a JSON a…

LayoutTests/crypto/rsa-indexeddb.html

Index: LayoutTests/crypto/rsa-indexeddb.html
diff --git a/LayoutTests/crypto/rsa-indexeddb.html b/LayoutTests/crypto/rsa-indexeddb.html
index a85ba7f200a2d96a53eca466536ccfb297e65bb8..222ae4e28a608af719df69bb14d82ee85be7c7c3 100644
--- a/LayoutTests/crypto/rsa-indexeddb.html
+++ b/LayoutTests/crypto/rsa-indexeddb.html
@@ -24,7 +24,7 @@ var privateKeyJSON = {
     qi: "YCX_pLwbMBA1ThVH0WcwmnytqNcrMCEwTm7ByA2eU6nWbQrULvf7m9_kzfLUcjsnpAVlBQG5JMXMy0Sq4ptwbywsa5-G8KAOOOR2L3v4hC-Eys9ftgFM_3i0o40eeQH4b3haPbntrIeMg8IzlOuVYKf9-2QuKDoWeRdd7NsdxTk"
 };
 
-crypto.subtle.importKey("jwk", asciiToUint8Array(JSON.stringify(privateKeyJSON)), {name: "RSASSA-PKCS1-v1_5", hash: {name: "sha-256"}}, true, ["sign"]).then(function(key) {
+crypto.subtle.importKey("jwk", privateKeyJSON, {name: "RSASSA-PKCS1-v1_5", hash: {name: "sha-256"}}, true, ["sign"]).then(function(key) {
     var openRequest = indexedDB.open("crypto_subtle");
     openRequest.onupgradeneeded = function(event) {
         var objectStore = event.target.result.createObjectStore("rsa-indexeddb");