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

LayoutTests/crypto/aes-export-key.html

Index: LayoutTests/crypto/aes-export-key.html
diff --git a/LayoutTests/crypto/aes-export-key.html b/LayoutTests/crypto/aes-export-key.html
index e4da05cb6e79ab10c5d4159ee8c4b4296eeb25d1..b6f71699be772ca70de870edf8eeaa6c63daa1a0 100644
--- a/LayoutTests/crypto/aes-export-key.html
+++ b/LayoutTests/crypto/aes-export-key.html
@@ -21,8 +21,6 @@ var jwkKey = {
     k: "jnOw99oOZFLIEPMrgJB55WL46tJSLGt7jnOw99oOZFI"
 };
 
-var jwkKeyAsArrayBuffer = asciiToUint8Array(JSON.stringify(jwkKey));
-
 Promise.resolve(null).then(function(result) {
     return crypto.subtle.exportKey("raw");
 }).then(failAndFinishJSTest, function(result) {
@@ -41,7 +39,7 @@ Promise.resolve(null).then(function(result) {
     logError(result);
     debug("\nImporting a JWK key...");
 
-    return crypto.subtle.importKey("jwk", jwkKeyAsArrayBuffer, {name: "AES-CBC"}, extractable, ['encrypt', 'decrypt', 'wrapKey', 'unwrapKey']);
+    return crypto.subtle.importKey("jwk", jwkKey, {name: "AES-CBC"}, extractable, ['encrypt', 'decrypt', 'wrapKey', 'unwrapKey']);
 }).then(function(result) {
     key = result;
 
@@ -79,7 +77,7 @@ Promise.resolve(null).then(function(result) {
     shouldBe("exportedJWK.key_ops", "['encrypt', 'decrypt', 'wrapKey', 'unwrapKey']");
 
     debug("\nImporting a key that's not extractable...");
-    return crypto.subtle.importKey("jwk", jwkKeyAsArrayBuffer, {name: "AES-CBC"}, nonExtractable, ['encrypt', 'decrypt', 'wrapKey', 'unwrapKey'])
+    return crypto.subtle.importKey("jwk", jwkKey, {name: "AES-CBC"}, nonExtractable, ['encrypt', 'decrypt', 'wrapKey', 'unwrapKey'])
 }).then(function(result) {
     key = result;