Remove unused includes from various .cpp files in core/

Source/core/fileapi/FileReaderSync.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 15 matching lines @@
  * 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 "core/fileapi/FileReaderSync.h"
 
 #include "core/fileapi/Blob.h"
-#include "core/fileapi/BlobURL.h"
 #include "core/fileapi/FileException.h"
 #include "core/fileapi/FileReaderLoader.h"
 #include <wtf/ArrayBuffer.h>
 #include <wtf/PassRefPtr.h>
 
 namespace WebCore {
 
 FileReaderSync::FileReaderSync()
 {
     ScriptWrappable::init(this);
@@ skipping 50 matching lines @@
     return loader.stringResult();
 }
 
 void FileReaderSync::startLoading(ScriptExecutionContext* scriptExecutionContext, FileReaderLoader& loader, Blob* blob, ExceptionCode& ec)
 {
     loader.start(scriptExecutionContext, blob);
     ec = FileException::ErrorCodeToExceptionCode(loader.errorCode());
 }
 
 } // namespace WebCore