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

third_party/lzma/v4_65/files/Java/SevenZip/Compression/RangeCoder/BitTreeDecoder.java

Index: third_party/lzma/v4_65/files/Java/SevenZip/Compression/RangeCoder/BitTreeDecoder.java
diff --git a/third_party/lzma/v4_65/files/Java/SevenZip/Compression/RangeCoder/BitTreeDecoder.java b/third_party/lzma/v4_65/files/Java/SevenZip/Compression/RangeCoder/BitTreeDecoder.java
deleted file mode 100644
index 76985814519d3d421ddb2cb6bfe12c251b2cde51..0000000000000000000000000000000000000000
--- a/third_party/lzma/v4_65/files/Java/SevenZip/Compression/RangeCoder/BitTreeDecoder.java
+++ /dev/null
@@ -1,55 +0,0 @@
-package SevenZip.Compression.RangeCoder;
-
-public class BitTreeDecoder
-{
-	short[] Models;
-	int NumBitLevels;
-	
-	public BitTreeDecoder(int numBitLevels)
-	{
-		NumBitLevels = numBitLevels;
-		Models = new short[1 << numBitLevels];
-	}
-	
-	public void Init()
-	{
-		Decoder.InitBitModels(Models);
-	}
-	
-	public int Decode(Decoder rangeDecoder) throws java.io.IOException
-	{
-		int m = 1;
-		for (int bitIndex = NumBitLevels; bitIndex != 0; bitIndex--)
-			m = (m << 1) + rangeDecoder.DecodeBit(Models, m);
-		return m - (1 << NumBitLevels);
-	}
-	
-	public int ReverseDecode(Decoder rangeDecoder) throws java.io.IOException
-	{
-		int m = 1;
-		int symbol = 0;
-		for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
-		{
-			int bit = rangeDecoder.DecodeBit(Models, m);
-			m <<= 1;
-			m += bit;
-			symbol |= (bit << bitIndex);
-		}
-		return symbol;
-	}
-	
-	public static int ReverseDecode(short[] Models, int startIndex,
-			Decoder rangeDecoder, int NumBitLevels) throws java.io.IOException
-	{
-		int m = 1;
-		int symbol = 0;
-		for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
-		{
-			int bit = rangeDecoder.DecodeBit(Models, startIndex + m);
-			m <<= 1;
-			m += bit;
-			symbol |= (bit << bitIndex);
-		}
-		return symbol;
-	}
-}