disable assembly in header for msan=1

include/libyuv/row.h

 /*
  *  Copyright 2011 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.
  */
 
@@ skipping 23 matching lines @@
 #endif
 
 #define free_aligned_buffer_64(var) \
   free(var##_mem);  \
   var = 0
 
 #if defined(__pnacl__) || defined(__CLR_VER) || \
     (defined(__i386__) && !defined(__SSE2__))
 #define LIBYUV_DISABLE_X86
 #endif
+// MemorySanitizer does not support assembly code yet. http://crbug.com/344505
+#if defined(__has_feature)
+#if __has_feature(memory_sanitizer)
+#define LIBYUV_DISABLE_X86
+#endif
+#endif
 // True if compiling for SSSE3 as a requirement.
 #if defined(__SSSE3__) || (defined(_M_IX86_FP) && (_M_IX86_FP >= 3))
 #define LIBYUV_SSSE3_ONLY
 #endif
 
 #if defined(__native_client__)
 #define LIBYUV_DISABLE_NEON
 #endif
 // clang >= 3.5.0 required for Arm64.
 #if defined(__clang__) && defined(__aarch64__) && !defined(LIBYUV_DISABLE_NEON)
@@ skipping 1860 matching lines @@
 void ARGBLumaColorTableRow_SSSE3(const uint8* src_argb, uint8* dst_argb,
                                  int width,
                                  const uint8* luma, uint32 lumacoeff);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // INCLUDE_LIBYUV_ROW_H_  NOLINT