Remove hand-written implementations of constructors.

Source/WebCore/bindings/dart/custom/DartFileReaderCustom.cpp

-// Copyright 2011, 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
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//    * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 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 "DartFileReader.h"
-
-#include "DartDOMWrapper.h"
-#include "DartUtilities.h"
-#include "DartFileReader.h"
-
-namespace WebCore {
-
-namespace DartFileReaderInternal {
-
-void constructorCallback(Dart_NativeArguments args)
-{
-    DartApiScope dartApiScope;
-    Dart_Handle exception;
-    {
-        ScriptExecutionContext* context = DartUtilities::scriptExecutionContext();
-        if (!context) {
-            exception = Dart_NewString("FileReader constructor's associated context is not available");
-            goto fail;
-        }
-
-        RefPtr<FileReader> fileReader = FileReader::create(context);
-        DartDOMWrapper::returnValue(args, fileReader.get());
-        return;
-    }
-
-fail:
-    Dart_ThrowException(exception);
-    ASSERT_NOT_REACHED();
-}
-
-}
-
-}