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

media/base/simd/convert_rgb_to_yuv_ssse3.h

-// Copyright (c) 2012 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.
-
-#ifndef MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_SSSE3_H_
-#define MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_SSSE3_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// The header file for ASM functions that convert a row of RGB pixels with SSSE3
-// instructions so we can call them from C++ code. These functions are
-// implemented in "convert_rgb_to_yuv_ssse3.asm".
-
-// We use ptrdiff_t instead of int for yasm routine parameters to portably
-// sign-extend int. On Win64, MSVC does not sign-extend the value in the stack
-// home of int function parameters, and yasm routines are unaware of this lack
-// of extension and fault.  ptrdiff_t is portably sign-extended and fixes this
-// issue on at least Win64.
-
-// Convert a row of 24-bit RGB pixels to YV12 pixels.
-void ConvertRGBToYUVRow_SSSE3(const uint8_t* rgb,
-                              uint8_t* y,
-                              uint8_t* u,
-                              uint8_t* v,
-                              ptrdiff_t width);
-
-// Convert a row of 32-bit RGB pixels to YV12 pixels.
-void ConvertARGBToYUVRow_SSSE3(const uint8_t* argb,
-                               uint8_t* y,
-                               uint8_t* u,
-                               uint8_t* v,
-                               ptrdiff_t width);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_SSSE3_H_