[webcrypto] Import WebKit's webcrypto tests.

LayoutTests/crypto/hmac-import-jwk-expected.txt

Index: LayoutTests/crypto/hmac-import-jwk-expected.txt
diff --git a/LayoutTests/crypto/hmac-import-jwk-expected.txt b/LayoutTests/crypto/hmac-import-jwk-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7ea266d14617218b180ae375150fd84966570d2a
--- /dev/null
+++ b/LayoutTests/crypto/hmac-import-jwk-expected.txt
@@ -0,0 +1,22 @@
+Test importing a JWK key for HMAC.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Importing a key...
+
+PASS key.type is 'secret'
+PASS key.extractable is false
+PASS key.algorithm.name is 'HMAC'
+PASS key.algorithm.length is 256
+PASS key.usages is ["sign", "verify"]
+
+Using the key to sign message 'foo'...
+PASS bytesToHexString(new Uint8Array(signature)) is 'e03736fe098892b2a2da77812431f7c014d32e2fd69f3bcff883ac923a8fa2da'
+
+Verifying the signature...
+PASS verificationResult is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
+