libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_enums.h

 /*
  *  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.
  */
 
@@ skipping 49 matching lines @@
 
 typedef enum PARTITION_TYPE {
   PARTITION_NONE,
   PARTITION_HORZ,
   PARTITION_VERT,
   PARTITION_SPLIT,
   PARTITION_TYPES,
   PARTITION_INVALID = PARTITION_TYPES
 } PARTITION_TYPE;
 
+typedef char PARTITION_CONTEXT;
 #define PARTITION_PLOFFSET   4  // number of probability models per block size
 #define PARTITION_CONTEXTS (4 * PARTITION_PLOFFSET)
 
 // block transform size
 typedef enum {
   TX_4X4 = 0,                      // 4x4 transform
   TX_8X8 = 1,                      // 8x8 transform
   TX_16X16 = 2,                    // 16x16 transform
   TX_32X32 = 3,                    // 32x32 transform
   TX_SIZES
@@ skipping 32 matching lines @@
   VP9_LAST_FLAG = 1 << 0,
   VP9_GOLD_FLAG = 1 << 1,
   VP9_ALT_FLAG = 1 << 2,
 } VP9_REFFRAME;
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_COMMON_VP9_ENUMS_H_