libvpx: Pull from upstream

source/libvpx/vpx_scale/vpx_scale.h

+/*
+ *  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.
+ */
+
+
+#ifndef VPXSCALE_H
+#define VPXSCALE_H
+
+#include "vpx_scale/yv12config.h"
+
+extern void vpx_scale_frame(YV12_BUFFER_CONFIG *src,
+                            YV12_BUFFER_CONFIG *dst,
+                            unsigned char *temp_area,
+                            unsigned char temp_height,
+                            unsigned int hscale,
+                            unsigned int hratio,
+                            unsigned int vscale,
+                            unsigned int vratio,
+                            unsigned int interlaced);
+
+#endif