Revert 194465 "media: Add support for playback for VP8 Alpha vid..."

trunk/src/media/base/yuv_convert.cc

 // 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.
 
 // This webpage shows layout of YV12 and other YUV formats
 // http://www.fourcc.org/yuv.php
 // The actual conversion is best described here
 // http://en.wikipedia.org/wiki/YUV
 // An article on optimizing YUV conversion using tables instead of multiplies
 // http://lestourtereaux.free.fr/papers/data/yuvrgb.pdf
@@ skipping 585 matching lines @@
       convert_proc = &ConvertYUVToRGB32_MMX;
     else
       convert_proc = &ConvertYUVToRGB32_C;
   }
 
   convert_proc(yplane, uplane, vplane, rgbframe,
                width, height, ystride, uvstride, rgbstride, yuv_type);
 #endif
 }
 
-void ConvertYUVAToARGB(const uint8* yplane,
-                       const uint8* uplane,
-                       const uint8* vplane,
-                       const uint8* aplane,
-                       uint8* rgbframe,
-                       int width,
-                       int height,
-                       int ystride,
-                       int uvstride,
-                       int astride,
-                       int rgbstride,
-                       YUVType yuv_type) {
-#if defined(ARCH_CPU_ARM_FAMILY) || defined(ARCH_CPU_MIPS_FAMILY)
-  ConvertYUVAToARGB_C(yplane, uplane, vplane, aplane, rgbframe,
-                      width, height, ystride, uvstride, astride, rgbstride,
-                      yuv_type);
-#else
-  static ConvertYUVAToARGBProc convert_proc = NULL;
-  if (!convert_proc) {
-    base::CPU cpu;
-    if (cpu.has_mmx())
-      convert_proc = &ConvertYUVAToARGB_MMX;
-    else
-      convert_proc = &ConvertYUVAToARGB_C;
-  }
-  convert_proc(yplane, uplane, vplane, aplane, rgbframe,
-               width, height, ystride, uvstride, astride, rgbstride, yuv_type);
-#endif
-}
-
 }  // namespace media