libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_reconinter.c

 /*
  *  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 135 matching lines @@
       break;
     case 3:
       res = mi_mv_pred_q4(mi, ref);
       break;
     default:
       assert(ss_idx <= 3 && ss_idx >= 0);
   }
   return res;
 }
 
-void build_inter_predictors(MACROBLOCKD *xd, int plane, int block,
+static void build_inter_predictors(MACROBLOCKD *xd, int plane, int block,
                                    int bw, int bh,
                                    int x, int y, int w, int h,
                                    int mi_x, int mi_y) {
   struct macroblockd_plane *const pd = &xd->plane[plane];
   const MODE_INFO *mi = xd->mi[0];
   const int is_compound = has_second_ref(&mi->mbmi);
   const InterpKernel *kernel = vp9_filter_kernels[mi->mbmi.interp_filter];
   int ref;
 
   for (ref = 0; ref < 1 + is_compound; ++ref) {
@@ skipping 127 matching lines @@
         src->v_buffer};
     const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
         src->uv_stride};
     for (i = 0; i < MAX_MB_PLANE; ++i) {
       struct macroblockd_plane *const pd = &xd->plane[i];
       setup_pred_plane(&pd->pre[idx], buffers[i], strides[i], mi_row, mi_col,
                        sf, pd->subsampling_x, pd->subsampling_y);
     }
   }
 }