libvpx: Pull from upstream

source/libvpx/vpx_scale/generic/yv12extend.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.
  */
 
 #include <assert.h>
 #include "./vpx_config.h"
+#include "./vpx_scale_rtcd.h"
 #include "vpx/vpx_integer.h"
 #include "vpx_mem/vpx_mem.h"
+#include "vpx_ports/mem.h"
 #include "vpx_scale/yv12config.h"
 #if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
 #include "vp9/common/vp9_common.h"
 #endif
 
 static void extend_plane(uint8_t *const src, int src_stride,
                          int width, int height,
                          int extend_top, int extend_left,
                          int extend_bottom, int extend_right) {
   int i;
@@ skipping 288 matching lines @@
     return;
   }
 #endif
 
   for (row = 0; row < src_ybc->y_height; ++row) {
     memcpy(dst, src, src_ybc->y_width);
     src += src_ybc->y_stride;
     dst += dst_ybc->y_stride;
   }
 }