libvpx: Pull from upstream

source/libvpx/vpx/src/vpx_decoder.c

Index: source/libvpx/vpx/src/vpx_decoder.c
===================================================================
--- source/libvpx/vpx/src/vpx_decoder.c	(revision 247498)
+++ source/libvpx/vpx/src/vpx_decoder.c	(working copy)
@@ -226,22 +226,3 @@
 
   return SAVE_STATUS(ctx, res);
 }
-
-vpx_codec_err_t vpx_codec_set_frame_buffers(
-    vpx_codec_ctx_t *ctx,
-    vpx_codec_frame_buffer_t *fb_list, int fb_count,
-    vpx_realloc_frame_buffer_cb_fn_t cb, void *user_priv) {
-  vpx_codec_err_t res;
-
-  if (!ctx || !fb_list || fb_count <= 0 || !cb) {
-    res = VPX_CODEC_INVALID_PARAM;
-  } else if (!ctx->iface || !ctx->priv ||
-             !(ctx->iface->caps & VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) {
-    res = VPX_CODEC_ERROR;
-  } else {
-    res = ctx->iface->dec.set_fb(ctx->priv->alg_priv, fb_list, fb_count,
-                                 cb, user_priv);
-  }
-
-  return SAVE_STATUS(ctx, res);
-}