Improve handling of failed integer type conversions.

Source/bindings/tests/results/V8TestInterface.cpp

 /*
  * Copyright (C) 2013 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 661 matching lines @@
 static void supplementalMethod4MethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestInterfaceV8Internal::supplementalMethod4Method(info);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "Execution");
 }
 #endif // ENABLE(Condition11) || ENABLE(Condition12)
 
 static void constructor(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
+    ExceptionState exceptionState(ExceptionState::ConstructionContext, "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 1)) {
-        throwTypeError(ExceptionMessages::failedToConstruct("TestInterface", ExceptionMessages::notEnoughArguments(1, info.Length())), info.GetIsolate());
+        exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, info.Length()));
+        exceptionState.throwIfNeeded();
         return;
     }
-    ExceptionState exceptionState(ExceptionState::ConstructionContext, "TestInterface", info.Holder(), info.GetIsolate());
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, str1, info[0]);
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, str2, info[1]);
     ExecutionContext* context = getExecutionContext();
     RefPtr<TestInterface> impl = TestInterface::create(context, str1, str2, exceptionState);
     v8::Handle<v8::Object> wrapper = info.Holder();
     if (exceptionState.throwIfNeeded())
         return;
 
     V8DOMWrapper::associateObjectWithWrapper<V8TestInterface>(impl.release(), &V8TestInterface::wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent);
     v8SetReturnValue(info, wrapper);
@@ skipping 284 matching lines @@
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterface* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore
 #endif // ENABLE(Condition1) || ENABLE(Condition2)