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

LayoutTests/crypto/rsassa-pkcs1-v1_5-import-jwk.html

Index: LayoutTests/crypto/rsassa-pkcs1-v1_5-import-jwk.html
diff --git a/LayoutTests/crypto/rsassa-pkcs1-v1_5-import-jwk.html b/LayoutTests/crypto/rsassa-pkcs1-v1_5-import-jwk.html
index 2a0cb5e04fc059cd55a4024cbd4b9133971933a7..c0fbd38f13cc81b43e5b0d8001f7c380f8cd102e 100644
--- a/LayoutTests/crypto/rsassa-pkcs1-v1_5-import-jwk.html
+++ b/LayoutTests/crypto/rsassa-pkcs1-v1_5-import-jwk.html
@@ -36,7 +36,7 @@ var privateKeyJSON = {
 };
 
 debug("Importing a public key...");
-crypto.subtle.importKey("jwk", asciiToUint8Array(JSON.stringify(publicKeyJSON)), {name: "RSASSA-PKCS1-v1_5", hash: {name: "sha-256"}}, extractable, ["verify"]).then(function(result) {
+crypto.subtle.importKey("jwk", publicKeyJSON, {name: "RSASSA-PKCS1-v1_5", hash: {name: "sha-256"}}, extractable, ["verify"]).then(function(result) {
     publicKey = result;
     shouldBe("publicKey.toString()", "'[object Key]'");
     shouldBe("publicKey.type", "'public'");
@@ -46,7 +46,7 @@ crypto.subtle.importKey("jwk", asciiToUint8Array(JSON.stringify(publicKeyJSON)),
     shouldBe("bytesToHexString(publicKey.algorithm.publicExponent)", "'010001'");
     shouldBe("publicKey.algorithm.hash.name", "'SHA-256'");
     debug("\nImporting a private key...");
-    return crypto.subtle.importKey("jwk", asciiToUint8Array(JSON.stringify(privateKeyJSON)), {name: "RSASSA-PKCS1-v1_5", hash: {name: "sha-256"}}, extractable, ["sign"]);
+    return crypto.subtle.importKey("jwk", privateKeyJSON, {name: "RSASSA-PKCS1-v1_5", hash: {name: "sha-256"}}, extractable, ["sign"]);
 }).then(function(result) {
     privateKey = result;
     shouldBe("privateKey.toString()", "'[object Key]'");