Remove unused FS callback partial specializations.

Source/modules/filesystem/FileWriter.h

 /*
  * 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 20 matching lines @@
 #ifndef FileWriter_h
 #define FileWriter_h
 
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fileapi/FileError.h"
 #include "modules/EventTargetModules.h"
 #include "modules/filesystem/FileWriterBase.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebFileWriterClient.h"
-#include "wtf/RefPtr.h"
 
 namespace blink {
 
 class Blob;
 class ExceptionState;
 class ExecutionContext;
 
 class FileWriter final
 #if ENABLE(OILPAN)
     : public EventTargetWithInlineData
     , public FileWriterBase
 #else
     : public FileWriterBase
     , public EventTargetWithInlineData
 #endif
     , public ActiveDOMObject
     , public WebFileWriterClient {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(FileWriterBase);
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FileWriter);
 public:
     static FileWriter* create(ExecutionContext*);
+    virtual ~FileWriter();
 
     enum ReadyState {
         INIT = 0,
         WRITING = 1,
         DONE = 2
     };
 
     void write(Blob*, ExceptionState&);
     void seek(long long position, ExceptionState&);
     void truncate(long long length, ExceptionState&);
@@ skipping 24 matching lines @@
     DECLARE_VIRTUAL_TRACE();
 
 private:
     enum Operation {
         OperationNone,
         OperationWrite,
         OperationTruncate,
         OperationAbort
     };
 
-    FileWriter(ExecutionContext*);
-
-    virtual ~FileWriter();
+    explicit FileWriter(ExecutionContext*);
 
     void completeAbort();
 
     void doOperation(Operation);
 
     void signalCompletion(FileError::ErrorCode);
 
     void fireEvent(const AtomicString& type);
 
     void setError(FileError::ErrorCode, ExceptionState&);
 
     Member<FileError> m_error;
     ReadyState m_readyState;
     Operation m_operationInProgress;
     Operation m_queuedOperation;
     long long m_bytesWritten;
     long long m_bytesToWrite;
     long long m_truncateLength;
     long long m_numAborts;
     long long m_recursionDepth;
     double m_lastProgressNotificationTimeMS;
     Member<Blob> m_blobBeingWritten;
     int m_asyncOperationId;
 };
 
 } // namespace blink
 
 #endif // FileWriter_h