Add experimental method to xcompress header.

third_party/xbox_sdk/include/xcompress.h

@@ -185,6 +185,19 @@ XMemDecompressStream(
     __inout SIZE_T*                         pSrcSize
     );
 
+XBOXAPI
+HRESULT
+WINAPI
+XMemDecompressSegmentTD(
+    __in    XMEMDECOMPRESSION_CONTEXT       Context,
+    __out_bcount( *pDestSize ) VOID*        pDestination,
+    __inout SIZE_T*                         pDestSize,
+    __in_bcount( *pSrcSize ) CONST VOID*    pSource,
+    __inout SIZE_T                          SrcSize,
+    __inout SIZE_T                          DestSize,
+    __inout SIZE_T                          Offset
+    );
+
 /*
  * LZX codec for lossless compression
  */