libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_pickmode.h

 /*
  *  Copyright (c) 2014 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 10 matching lines @@
   uint8_t *data;
   int stride;
   int in_use;
 } PRED_BUFFER;
 
 int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
                             const struct TileInfo *const tile,
                             int mi_row, int mi_col,
                             int *returnrate,
                             int64_t *returndistortion,
-                            BLOCK_SIZE bsize);
+                            BLOCK_SIZE bsize,
+                            PICK_MODE_CONTEXT *ctx);
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_ENCODER_VP9_PICKMODE_H_