Remove ENABLE(FILE_SYSTEM) compile-time flag.

Source/WebCore/Modules/filesystem/FileWriterBase.cpp

 /*
  * Copyright (C) 2010 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 12 matching lines @@
  * 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"
 
-#if ENABLE(FILE_SYSTEM)
-
 #include "FileWriterBase.h"
 
 #include "AsyncFileWriter.h"
 #include "Blob.h"
 #include "ExceptionCode.h"
 #include "FileError.h"
 #include "FileException.h"
 #include "ProgressEvent.h"
 
 namespace WebCore {
@@ skipping 20 matching lines @@
     if (position > m_length)
         position = m_length;
     else if (position < 0)
         position = m_length + position;
     if (position < 0)
         position = 0;
     m_position = position;
 }
 
 } // namespace WebCore
-
-#endif // ENABLE(FILE_SYSTEM)