Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/CPP/7zip/UI/Common/IFileExtractCallback.h

-// IFileExtractCallback.h
-
-#ifndef __IFILEEXTRACTCALLBACK_H
-#define __IFILEEXTRACTCALLBACK_H
-
-#include "Common/MyString.h"
-#include "../../IDecl.h"
-
-namespace NOverwriteAnswer
-{
-  enum EEnum
-  {
-    kYes,
-    kYesToAll,
-    kNo,
-    kNoToAll,
-    kAutoRename,
-    kCancel
-  };
-}
-
-DECL_INTERFACE_SUB(IFolderArchiveExtractCallback, IProgress, 0x01, 0x07)
-{
-public:
-  STDMETHOD(AskOverwrite)(
-      const wchar_t *existName, const FILETIME *existTime, const UInt64 *existSize,
-      const wchar_t *newName, const FILETIME *newTime, const UInt64 *newSize,
-      Int32 *answer) PURE;
-  STDMETHOD(PrepareOperation)(const wchar_t *name, bool isFolder, Int32 askExtractMode, const UInt64 *position) PURE;
-  STDMETHOD(MessageError)(const wchar_t *message) PURE;
-  STDMETHOD(SetOperationResult)(Int32 operationResult, bool encrypted) PURE;
-};
-
-struct IExtractCallbackUI: IFolderArchiveExtractCallback
-{
-  virtual HRESULT BeforeOpen(const wchar_t *name) = 0;
-  virtual HRESULT OpenResult(const wchar_t *name, HRESULT result, bool encrypted) = 0;
-  virtual HRESULT ThereAreNoFiles() = 0;
-  virtual HRESULT ExtractResult(HRESULT result) = 0;
-
-  #ifndef _NO_CRYPTO
-  virtual HRESULT SetPassword(const UString &password) = 0;
-  #endif
-};
-
-#endif