libvpx: Pull from upstream

source/libvpx/vp8/common/x86/postproc_x86.c

Index: source/libvpx/vp8/common/x86/postproc_x86.c
===================================================================
--- source/libvpx/vp8/common/x86/postproc_x86.c	(revision 278778)
+++ source/libvpx/vp8/common/x86/postproc_x86.c	(working copy)
@@ -1,24 +0,0 @@
-/*
- *  Copyright (c) 2012 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.
- */
-
-/* On Android NDK, rand is inlined function, but postproc needs rand symbol */
-#if defined(__ANDROID__)
-#define rand __rand
-#include <stdlib.h>
-#undef rand
-
-extern int rand(void)
-{
-  return __rand();
-}
-#else
-/* ISO C forbids an empty translation unit. */
-int vp8_unused;
-#endif