Remove unused exception types from WebCrypto. (Chromium-side)

content/child/webcrypto/test/test_helpers.cc

Index: content/child/webcrypto/test/test_helpers.cc
diff --git a/content/child/webcrypto/test/test_helpers.cc b/content/child/webcrypto/test/test_helpers.cc
index 397a8cccd5b53b95a78e1f58e4dd91a55a0f0124..68bbf30c9c16b1c1268554c5b444844a6c38dc34 100644
--- a/content/child/webcrypto/test/test_helpers.cc
+++ b/content/child/webcrypto/test/test_helpers.cc
@@ -80,15 +80,11 @@ static std::string ErrorTypeToString(blink::WebCryptoErrorType type) {
       return "SyntaxError";
     case blink::WebCryptoErrorTypeOperation:
       return "OperationError";
-    case blink::WebCryptoErrorTypeUnknown:
-      return "UnknownError";
-    case blink::WebCryptoErrorTypeInvalidState:
-      return "InvalidState";
     case blink::WebCryptoErrorTypeInvalidAccess:
       return "InvalidAccess";
+    default:
+      return "?";
   }
-
-  return "?";
 }
 
 std::string StatusToString(const Status& status) {