Decouple arity errors creation from throwing.

Source/bindings/tests/results/V8TestInterfaceNamedConstructor.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.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #include "V8TestInterfaceNamedConstructor.h"
 
 #include "bindings/core/v8/ExceptionState.h"
@@ skipping 67 matching lines @@
         V8ThrowException::throwTypeError(ExceptionMessages::constructorNotCallableAsFunction("Audio"), info.GetIsolate());
         return;
     }
 
     if (ConstructorMode::current(info.GetIsolate()) == ConstructorMode::WrapExistingObject) {
         v8SetReturnValue(info, info.Holder());
         return;
     }
     ExceptionState exceptionState(ExceptionState::ConstructionContext, "TestInterfaceNamedConstructor", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 1)) {
-        throwMinimumArityTypeError(exceptionState, 1, info.Length());
+        setMinimumArityTypeError(exceptionState, 1, info.Length());
+        exceptionState.throwIfNeeded();
         return;
     }
     V8StringResource<> stringArg;
     bool defaultUndefinedOptionalBooleanArg;
     int defaultUndefinedOptionalLongArg;
     V8StringResource<> defaultUndefinedOptionalStringArg;
     V8StringResource<> defaultNullStringOptionalstringArg;
     V8StringResource<> optionalStringArg;
     {
         v8::TryCatch block;
@@ skipping 124 matching lines @@
     fromInternalPointer(internalPointer)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceNamedConstructor* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink