media: Add support for playback of VP8 Alpha video streams

media/media.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the cras (ChromeOS audio) library.
     'use_cras%': 0,
     # Option e.g. for Linux distributions to link pulseaudio directly
@@ skipping 1151 matching lines @@
             'base/simd/convert_rgb_to_yuv_c.cc',
             'base/simd/convert_rgb_to_yuv_sse2.cc',
             'base/simd/convert_rgb_to_yuv_ssse3.asm',
             'base/simd/convert_rgb_to_yuv_ssse3.cc',
             'base/simd/convert_rgb_to_yuv_ssse3.inc',
             'base/simd/convert_yuv_to_rgb_c.cc',
             'base/simd/convert_yuv_to_rgb_mmx.asm',
             'base/simd/convert_yuv_to_rgb_mmx.inc',
             'base/simd/convert_yuv_to_rgb_sse.asm',
             'base/simd/convert_yuv_to_rgb_x86.cc',
+            'base/simd/convert_yuva_to_argb_mmx.asm',
+            'base/simd/convert_yuva_to_argb_mmx.inc',            
             'base/simd/empty_register_state_mmx.asm',
             'base/simd/filter_yuv.h',
             'base/simd/filter_yuv_c.cc',
             'base/simd/filter_yuv_sse2.cc',
             'base/simd/linear_scale_yuv_to_rgb_mmx.asm',
             'base/simd/linear_scale_yuv_to_rgb_mmx.inc',
             'base/simd/linear_scale_yuv_to_rgb_sse.asm',
             'base/simd/scale_yuv_to_rgb_mmx.asm',
             'base/simd/scale_yuv_to_rgb_mmx.inc',
             'base/simd/scale_yuv_to_rgb_sse.asm',
@@ skipping 507 matching lines @@
           ],
           'sources': [
             'base/simd/sinc_resampler_sse.cc',
             'base/simd/vector_math_sse.cc',
           ],
         }, # end of target media_sse
       ],
     }],
   ],
 }