[webcrypto] order Key.usages alphabetically.

LayoutTests/crypto/encrypt-decrypt.html

Index: LayoutTests/crypto/encrypt-decrypt.html
diff --git a/LayoutTests/crypto/encrypt-decrypt.html b/LayoutTests/crypto/encrypt-decrypt.html
index 93a75dd91aee3facb9d4b4b504c2e64f60158f93..406e17931f967c80a436b15142be4cbee754f3d4 100644
--- a/LayoutTests/crypto/encrypt-decrypt.html
+++ b/LayoutTests/crypto/encrypt-decrypt.html
@@ -88,7 +88,7 @@ function runSuccessTestCase(testCase)
         shouldBe("tmpKey.type", "'secret'")
         shouldBe("tmpKey.extractable", "false")
         shouldBe("tmpKey.algorithm.name", "'AES-CBC'")
-        shouldBe("tmpKey.usages.join(',')", "'encrypt,decrypt'")
+        shouldBe("tmpKey.usages.join(',')", "'decrypt,encrypt'")
 
         // (2) Encrypt.
         return crypto.subtle.encrypt(algorithm, key, hexStringToUint8Array(testCase.plainText));