libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_pred_common.h

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 21 matching lines @@
 static INLINE int vp9_get_pred_context_seg_id(const MACROBLOCKD *xd) {
   const MODE_INFO *const above_mi = get_above_mi(xd);
   const MODE_INFO *const left_mi = get_left_mi(xd);
   const int above_sip = (above_mi != NULL) ?
                         above_mi->mbmi.seg_id_predicted : 0;
   const int left_sip = (left_mi != NULL) ? left_mi->mbmi.seg_id_predicted : 0;
 
   return above_sip + left_sip;
 }
 
-static INLINE vp9_prob vp9_get_pred_prob_seg_id(struct segmentation *seg,
+static INLINE vp9_prob vp9_get_pred_prob_seg_id(const struct segmentation *seg,
                                                 const MACROBLOCKD *xd) {
   return seg->pred_probs[vp9_get_pred_context_seg_id(xd)];
 }
 
 static INLINE int vp9_get_skip_context(const MACROBLOCKD *xd) {
   const MODE_INFO *const above_mi = get_above_mi(xd);
   const MODE_INFO *const left_mi = get_left_mi(xd);
   const int above_skip = (above_mi != NULL) ? above_mi->mbmi.skip : 0;
   const int left_skip = (left_mi != NULL) ? left_mi->mbmi.skip : 0;
   return above_skip + left_skip;
@@ skipping 79 matching lines @@
       assert(0 && "Invalid max_tx_size.");
       return NULL;
   }
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_COMMON_VP9_PRED_COMMON_H_