Implement better HPACK Huffman code decoder.

net/spdy/hpack/hpack_decoder.h

Index: net/spdy/hpack/hpack_decoder.h
diff --git a/net/spdy/hpack/hpack_decoder.h b/net/spdy/hpack/hpack_decoder.h
index 85c7f2b5b344c6a0948a394a5093ce89c7ca329d..da6162d7f3748169294c84c9851b7225a2b6ea65 100644
--- a/net/spdy/hpack/hpack_decoder.h
+++ b/net/spdy/hpack/hpack_decoder.h
@@ -25,8 +25,6 @@
 
 namespace net {
 
-class HpackHuffmanTable;
-
 namespace test {
 class HpackDecoderPeer;
 }  // namespace test
@@ -35,9 +33,7 @@ class NET_EXPORT_PRIVATE HpackDecoder {
  public:
   friend class test::HpackDecoderPeer;
 
-  // |table| is an initialized HPACK Huffman table, having an
-  // externally-managed lifetime which spans beyond HpackDecoder.
-  explicit HpackDecoder(const HpackHuffmanTable& table);
+  HpackDecoder();
   ~HpackDecoder();
 
   // Called upon acknowledgement of SETTINGS_HEADER_TABLE_SIZE.
@@ -102,9 +98,7 @@ class NET_EXPORT_PRIVATE HpackDecoder {
   std::string headers_block_buffer_;
   SpdyHeaderBlock decoded_block_;
 
-  // Huffman table to be applied to decoded Huffman literals,
-  // and scratch space for storing those decoded literals.
-  const HpackHuffmanTable& huffman_table_;
+  // Scratch space for storing decoded literals.
   std::string key_buffer_, value_buffer_;
 
   // If non-NULL, handles decoded headers.