[webcrypto] order Key.usages alphabetically.

Source/modules/crypto/Key.cpp

Index: Source/modules/crypto/Key.cpp
diff --git a/Source/modules/crypto/Key.cpp b/Source/modules/crypto/Key.cpp
index e4e00e6b5a4cbb8aa0119aeefa9c0b68b12c5db6..705e84e061e320c24afa8635c662b85fc01a7bd5 100644
--- a/Source/modules/crypto/Key.cpp
+++ b/Source/modules/crypto/Key.cpp
@@ -59,14 +59,15 @@ struct KeyUsageMapping {
     const char* const name;
 };
 
+// Keep this array sorted.
 const KeyUsageMapping keyUsageMappings[] = {
-    { blink::WebCryptoKeyUsageEncrypt, "encrypt" },
     { blink::WebCryptoKeyUsageDecrypt, "decrypt" },
+    { blink::WebCryptoKeyUsageDeriveKey, "deriveKey" },
+    { blink::WebCryptoKeyUsageEncrypt, "encrypt" },
     { blink::WebCryptoKeyUsageSign, "sign" },
+    { blink::WebCryptoKeyUsageUnwrapKey, "unwrapKey" },
     { blink::WebCryptoKeyUsageVerify, "verify" },
-    { blink::WebCryptoKeyUsageDeriveKey, "deriveKey" },
     { blink::WebCryptoKeyUsageWrapKey, "wrapKey" },
-    { blink::WebCryptoKeyUsageUnwrapKey, "unwrapKey" },
 };
 
 COMPILE_ASSERT(blink::EndOfWebCryptoKeyUsage == (1 << 6) + 1, update_keyUsageMappings);