Remove FileError interface

third_party/WebKit/Source/core/fileapi/FileReader.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 55 matching lines @@
     void readAsArrayBuffer(Blob*, ExceptionState&);
     void readAsBinaryString(Blob*, ExceptionState&);
     void readAsText(Blob*, const String& encoding, ExceptionState&);
     void readAsText(Blob*, ExceptionState&);
     void readAsDataURL(Blob*, ExceptionState&);
     void abort();
 
     void doAbort();
 
     ReadyState getReadyState() const { return m_state; }
-    FileError* error() { return m_error; }
+    DOMException* error() { return m_error; }
     void result(StringOrArrayBuffer& resultAttribute) const;
 
     // ActiveDOMObject
     void stop() override;
 
     // ActiveScriptWrappable
     bool hasPendingActivity() const final;
 
     // EventTarget
     const AtomicString& interfaceName() const override;
@@ skipping 36 matching lines @@
         LoadingStateAborted
     };
     LoadingState m_loadingState;
 
     String m_blobType;
     RefPtr<BlobDataHandle> m_blobDataHandle;
     FileReaderLoader::ReadType m_readType;
     String m_encoding;
 
     std::unique_ptr<FileReaderLoader> m_loader;
-    Member<FileError> m_error;
+    Member<DOMException> m_error;
     double m_lastProgressNotificationTimeMS;
 };
 
 } // namespace blink
 
 #endif // FileReader_h