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

third_party/lzma/v4_65/files/CS/7zip/Common/OutBuffer.cs

Index: third_party/lzma/v4_65/files/CS/7zip/Common/OutBuffer.cs
diff --git a/third_party/lzma/v4_65/files/CS/7zip/Common/OutBuffer.cs b/third_party/lzma/v4_65/files/CS/7zip/Common/OutBuffer.cs
deleted file mode 100644
index 2da16e16295fe0e2df0f37e7c4000d3510837840..0000000000000000000000000000000000000000
--- a/third_party/lzma/v4_65/files/CS/7zip/Common/OutBuffer.cs
+++ /dev/null
@@ -1,47 +0,0 @@
-// OutBuffer.cs
-
-namespace SevenZip.Buffer
-{
-	public class OutBuffer
-	{
-		byte[] m_Buffer;
-		uint m_Pos;
-		uint m_BufferSize;
-		System.IO.Stream m_Stream;
-		ulong m_ProcessedSize;
-
-		public OutBuffer(uint bufferSize)
-		{
-			m_Buffer = new byte[bufferSize];
-			m_BufferSize = bufferSize;
-		}
-
-		public void SetStream(System.IO.Stream stream) { m_Stream = stream; }
-		public void FlushStream() { m_Stream.Flush(); }
-		public void CloseStream() { m_Stream.Close(); }
-		public void ReleaseStream() { m_Stream = null; }
-
-		public void Init()
-		{
-			m_ProcessedSize = 0;
-			m_Pos = 0;
-		}
-
-		public void WriteByte(byte b)
-		{
-			m_Buffer[m_Pos++] = b;
-			if (m_Pos >= m_BufferSize)
-				FlushData();
-		}
-
-		public void FlushData()
-		{
-			if (m_Pos == 0)
-				return;
-			m_Stream.Write(m_Buffer, 0, (int)m_Pos);
-			m_Pos = 0;
-		}
-
-		public ulong GetProcessedSize() { return m_ProcessedSize + m_Pos; }
-	}
-}