Decouple arity errors creation from throwing.

Source/bindings/core/v8/custom/V8ElementCustom.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 207 matching lines @@
         }
         // [MeasureAs=ElementAnimateKeyframeListEffectDoubleTiming]
         // AnimationPlayer animate(sequence<Dictionary> effect, double timing);
         if (info[0]->IsArray()) {
             UseCounter::count(callingExecutionContext(isolate), UseCounter::ElementAnimateKeyframeListEffectDoubleTiming);
             animate5Method(info);
             return;
         }
         break;
     default:
-        throwArityTypeError(exceptionState, "[1]", info.Length());
+        setArityTypeError(exceptionState, "[1]", info.Length());
+        exceptionState.throwIfNeeded();
         return;
         break;
     }
     exceptionState.throwTypeError("No function was found that matched the signature provided.");
     exceptionState.throwIfNeeded();
 }
 
 } // namespace blink