libvpx: Pull from upstream

source/libvpx/vpx_scale/yv12config.h

Index: source/libvpx/vpx_scale/yv12config.h
diff --git a/source/libvpx/vpx_scale/yv12config.h b/source/libvpx/vpx_scale/yv12config.h
index 76cf771c74a2256daf897adec33e9646432329f1..fd5d54babf66404e8012bab1de4136cc16700dc1 100644
--- a/source/libvpx/vpx_scale/yv12config.h
+++ b/source/libvpx/vpx_scale/yv12config.h
@@ -69,7 +69,7 @@ int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                                   int width, int height, int border);
 int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
 
-int vp9_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
+int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                            int width, int height, int ss_x, int ss_y,
 #if CONFIG_VP9_HIGHBITDEPTH
                            int use_highbitdepth,
@@ -83,7 +83,7 @@ int vp9_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
 // 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 vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                              int width, int height, int ss_x, int ss_y,
 #if CONFIG_VP9_HIGHBITDEPTH
                              int use_highbitdepth,
@@ -93,7 +93,7 @@ int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                              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);
+int vpx_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
 
 #ifdef __cplusplus
 }