Decouple arity errors creation from throwing.

Source/bindings/modules/v8/custom/V8SubtleCryptoCustom.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "bindings/modules/v8/V8SubtleCrypto.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/custom/V8ArrayBufferCustom.h"
 #include "bindings/core/v8/custom/V8ArrayBufferViewCustom.h"
@@ skipping 96 matching lines @@
             return;
         }
         // Promise verify(Dictionary algorithm, CryptoKey key, ArrayBufferView signature, ArrayBufferView data);
         if (V8ArrayBufferView::hasInstance(info[2], isolate)
             && V8ArrayBufferView::hasInstance(info[3], isolate)) {
             verify4Method(info);
             return;
         }
         break;
     default:
-        throwArityTypeError(exceptionState, "[4]", info.Length());
+        setArityTypeError(exceptionState, "[4]", info.Length());
+        exceptionState.throwIfNeeded();
         return;
         break;
     }
     exceptionState.throwTypeError("No function was found that matched the signature provided.");
     exceptionState.throwIfNeeded();
 }
 
 } // namespace blink