libvpx: Pull from upstream

source/libvpx/vpx_scale/yv12config.h

Index: source/libvpx/vpx_scale/yv12config.h
===================================================================
--- source/libvpx/vpx_scale/yv12config.h	(revision 251189)
+++ source/libvpx/vpx_scale/yv12config.h	(working copy)
@@ -15,6 +15,7 @@
 extern "C" {
 #endif
 
+#include "vpx/vpx_frame_buffer.h"
 #include "vpx/vpx_integer.h"
 
 #define VP8BORDERINPIXELS           32
@@ -65,9 +66,19 @@
   int vp9_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                              int width, int height, int ss_x, int ss_y,
                              int border);
+
+  // Updates the yv12 buffer config with the frame buffer. If cb is not
+  // NULL, then libvpx is using the frame buffer callbacks to handle memory.
+  // If cb is not NULL, libvpx will call cb with minimum size in bytes needed
+  // to decode the current frame. If cb is NULL, libvpx will allocate memory
+  // internally to decode the current frame. Returns 0 on success. Returns < 0
+  // on failure.
   int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                                int width, int height, int ss_x, int ss_y,
-                               int border);
+                               int border,
+                               vpx_codec_frame_buffer_t *fb,
+                               vpx_get_frame_buffer_cb_fn_t cb,
+                               void *cb_priv);
   int vp9_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
 
 #ifdef __cplusplus