libvpx: Pull from upstream

source/libvpx/third_party/libyuv/source/mjpeg_validate.cc

 /*
  *  Copyright 2012 The LibYuv 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.
  */
 
 #include "libyuv/mjpeg_decoder.h"
 
 #include <string.h>  // For memchr.
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
 // Enable this to try scasb implementation.
 // #define ENABLE_SCASB 1
 
 #ifdef ENABLE_SCASB
 
 // Multiple of 1.
-__declspec(naked) __declspec(align(16))
+__declspec(naked)
 const uint8* ScanRow_ERMS(const uint8* src, uint32 val, int count) {
   __asm {
     mov        edx, edi
     mov        edi, [esp + 4]   // src
     mov        eax, [esp + 8]   // val
     mov        ecx, [esp + 12]  // count
     repne scasb
     jne        sr99
     mov        eax, edi
     sub        eax, 1
@@ skipping 55 matching lines @@
   }
   return ScanEOI(sample, sample_size);
 
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif