[webcrypto] exportKey() now returns dictionary when format='jwk' (CL 2 of 2).

LayoutTests/crypto/rsa-oaep-key-manipulation.html

Index: LayoutTests/crypto/rsa-oaep-key-manipulation.html
diff --git a/LayoutTests/crypto/rsa-oaep-key-manipulation.html b/LayoutTests/crypto/rsa-oaep-key-manipulation.html
index fe9001f9baf30e24c92796a14e1e4b1f69d44bf5..040f86200abad3da09c07c6c52e4e570141f113e 100644
--- a/LayoutTests/crypto/rsa-oaep-key-manipulation.html
+++ b/LayoutTests/crypto/rsa-oaep-key-manipulation.html
@@ -61,8 +61,7 @@ crypto.subtle.generateKey(algorithmKeyGen, extractable, ["encrypt", "decrypt", "
     debug("\nExporting public key to JWK...");
     return crypto.subtle.exportKey("jwk", keyPair.publicKey);
 }).then(function(result) {
-    jwkPublicKeyArray = result;
-    jwkPublicKey = JSON.parse(bytesToASCIIString(jwkPublicKeyArray));
+    jwkPublicKey = result;
     shouldBe("jwkPublicKey.alg", "'RSA-OAEP'");
     shouldBe("jwkPublicKey.ext", "true");
     shouldBe("jwkPublicKey.key_ops", "['encrypt', 'wrapKey']");