libvpx: Pull from upstream

source/libvpx/vpx_scale/generic/yv12config.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 63 matching lines @@
      * vpx_img_set_rect(). */
     if (border & 0x1f)
       return -3;
 
     ybf->y_crop_width = width;
     ybf->y_crop_height = height;
     ybf->y_width  = aligned_width;
     ybf->y_height = aligned_height;
     ybf->y_stride = y_stride;
 
+    ybf->uv_crop_width = (width + 1) / 2;
+    ybf->uv_crop_height = (height + 1) / 2;
     ybf->uv_width = uv_width;
     ybf->uv_height = uv_height;
     ybf->uv_stride = uv_stride;
 
     ybf->alpha_width = 0;
     ybf->alpha_height = 0;
     ybf->alpha_stride = 0;
 
     ybf->border = border;
     ybf->frame_size = frame_size;
@@ skipping 158 matching lines @@
                            int width, int height,
                            int ss_x, int ss_y, int border) {
   if (ybf) {
     vp9_free_frame_buffer(ybf);
     return vp9_realloc_frame_buffer(ybf, width, height, ss_x, ss_y, border,
                                     NULL, NULL, NULL);
   }
   return -2;
 }
 #endif