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

third_party/lzma/v4_65/files/CPP/7zip/Archive/Common/InStreamWithCRC.cpp

Index: third_party/lzma/v4_65/files/CPP/7zip/Archive/Common/InStreamWithCRC.cpp
diff --git a/third_party/lzma/v4_65/files/CPP/7zip/Archive/Common/InStreamWithCRC.cpp b/third_party/lzma/v4_65/files/CPP/7zip/Archive/Common/InStreamWithCRC.cpp
deleted file mode 100644
index 1d9e55562639c0b4f7fdb1af3ab0f20e25f3da42..0000000000000000000000000000000000000000
--- a/third_party/lzma/v4_65/files/CPP/7zip/Archive/Common/InStreamWithCRC.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-// InStreamWithCRC.cpp
-
-#include "StdAfx.h"
-
-#include "InStreamWithCRC.h"
-
-STDMETHODIMP CSequentialInStreamWithCRC::Read(void *data, UInt32 size, UInt32 *processedSize)
-{
-  UInt32 realProcessedSize;
-  HRESULT result = _stream->Read(data, size, &realProcessedSize);
-  _size += realProcessedSize;
-  if (size > 0 && realProcessedSize == 0)
-    _wasFinished = true;
-  _crc = CrcUpdate(_crc, data, realProcessedSize);
-  if(processedSize != NULL)
-    *processedSize = realProcessedSize;
-  return result;
-}
-
-STDMETHODIMP CInStreamWithCRC::Read(void *data, UInt32 size, UInt32 *processedSize)
-{
-  UInt32 realProcessedSize;
-  HRESULT result = _stream->Read(data, size, &realProcessedSize);
-  if (size > 0 && realProcessedSize == 0)
-    _wasFinished = true;
-  _size += realProcessedSize;
-  _crc = CrcUpdate(_crc, data, realProcessedSize);
-  if(processedSize != NULL)
-    *processedSize = realProcessedSize;
-  return result;
-}
-
-STDMETHODIMP CInStreamWithCRC::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
-{
-  if (seekOrigin != STREAM_SEEK_SET || offset != 0)
-    return E_FAIL;
-  _size = 0;
-  _crc = CRC_INIT_VAL;
-  return _stream->Seek(offset, seekOrigin, newPosition);
-}