libvpx: Pull from upstream

source/libvpx/vp9/decoder/vp9_treereader.h

Index: source/libvpx/vp9/decoder/vp9_treereader.h
===================================================================
--- source/libvpx/vp9/decoder/vp9_treereader.h	(revision 240950)
+++ source/libvpx/vp9/decoder/vp9_treereader.h	(working copy)
@@ -1,32 +0,0 @@
-/*
- *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-
-#ifndef VP9_DECODER_VP9_TREEREADER_H_
-#define VP9_DECODER_VP9_TREEREADER_H_
-
-#include "vp9/common/vp9_treecoder.h"
-#include "vp9/decoder/vp9_dboolhuff.h"
-
-#define vp9_read_and_apply_sign(r, value) (vp9_read_bit(r) ? -(value) : (value))
-
-// Intent of tree data structure is to make decoding trivial.
-static int treed_read(vp9_reader *const r, /* !!! must return a 0 or 1 !!! */
-                      vp9_tree t,
-                      const vp9_prob *const p) {
-  register vp9_tree_index i = 0;
-
-  while ((i = t[ i + vp9_read(r, p[i >> 1])]) > 0)
-    continue;
-
-  return -i;
-}
-
-#endif  // VP9_DECODER_VP9_TREEREADER_H_