Generate a bit less code to handle failed arity checks.

Source/bindings/v8/custom/V8TextTrackCueCustom.cpp

 /*
  * Copyright (c) 2013, Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "V8TextTrackCue.h"
 
 #include "V8VTTCue.h"
+
+#include "bindings/v8/ExceptionMessages.h"
+#include "bindings/v8/ExceptionState.h"
 #include "core/frame/UseCounter.h"
 
 namespace WebCore {
 
 v8::Handle<v8::Value> toV8(TextTrackCue* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(toVTTCue(impl), creationContext, isolate);
 }
 
 // Custom constructor to make new TextTrackCue(...) return a VTTCue. This is legacy
 // compat, not per spec, and should be removed at the earliest opportunity.
 void V8TextTrackCue::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
+    ExceptionState exceptionState(ExceptionState::ConstructionContext, "TextTrackCue", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 3)) {
-        throwTypeError(ExceptionMessages::failedToConstruct("TextTrackCue", ExceptionMessages::notEnoughArguments(3, info.Length())), info.GetIsolate());
+        exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(3, info.Length()));
+        exceptionState.throwIfNeeded();
         return;
     }
     V8TRYCATCH_VOID(double, startTime, static_cast<double>(info[0]->NumberValue()));
     V8TRYCATCH_VOID(double, endTime, static_cast<double>(info[1]->NumberValue()));
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, text, info[2]);
 
     Document& document = *toDocument(getExecutionContext());
     UseCounter::count(document, UseCounter::TextTrackCueConstructor);
     VTTCue* impl = VTTCue::create(document, startTime, endTime, text).leakRef();
     v8::Handle<v8::Object> wrapper = wrap(impl, info.Holder(), info.GetIsolate());
     info.GetReturnValue().Set(wrapper);
 }
 
 } // namespace WebCore