Delete media/base/yuv_convert and dependents. Prefer libyuv.

media/base/simd/convert_yuva_to_argb_mmx.asm

Index: media/base/simd/convert_yuva_to_argb_mmx.asm
diff --git a/media/base/simd/convert_yuva_to_argb_mmx.asm b/media/base/simd/convert_yuva_to_argb_mmx.asm
deleted file mode 100644
index 28a147e01b467d1820223170755276e1b6cd355c..0000000000000000000000000000000000000000
--- a/media/base/simd/convert_yuva_to_argb_mmx.asm
+++ /dev/null
@@ -1,24 +0,0 @@
-; Copyright (c) 2011 The Chromium Authors. All rights reserved.
-; Use of this source code is governed by a BSD-style license that can be
-; found in the LICENSE file.
-
-%include "third_party/x86inc/x86inc.asm"
-
-;
-; This file uses MMX instructions.
-;
-  SECTION_TEXT
-  CPU       MMX
-
-; Use movq to save the output.
-%define MOVQ movq
-
-; extern "C" void ConvertYUVAToARGBRow_MMX(const uint8_t* y_buf,
-;                                          const uint8_t* u_buf,
-;                                          const uint8_t* v_buf,
-;                                          const uint8_t* a_buf,
-;                                          uint8_t* rgb_buf,
-;                                          ptrdiff_t width);
-;                                          const int16_t* convert_table);
-%define SYMBOL ConvertYUVAToARGBRow_MMX
-%include "convert_yuva_to_argb_mmx.inc"