Add support for Rec709 color space videos in software YUV convert path.

media/base/simd/convert_rgb_to_yuv_sse2.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.
 
 #include "build/build_config.h"
 #include "media/base/simd/convert_rgb_to_yuv.h"
-#include "media/base/simd/yuv_to_rgb_table.h"
 
 #if defined(COMPILER_MSVC)
 #include <intrin.h>
 #else
 #include <mmintrin.h>
 #include <emmintrin.h>
 #endif
 
+#if defined(COMPILER_MSVC)
+#define SIMD_ALIGNED(var) __declspec(align(16)) var
+#else
+#define SIMD_ALIGNED(var) var __attribute__((aligned(16)))
+#endif
+
 namespace media {
 
 #define FIX_SHIFT 12
 #define FIX(x) ((x) * (1 << FIX_SHIFT))
 
 // Define a convenient macro to do static cast.
 #define INT16_FIX(x) static_cast<int16>(FIX(x))
 
 // Android's pixel layout is RGBA, while other platforms
 // are BGRA.
@@ skipping 377 matching lines @@
     ++vplane;
     width -= 2;
   }
 
   // Handle the last pixel in the last row.
   if (width)
     ConvertRGBToYUV_V1H1(rgbframe, yplane, uplane, vplane);
 }
 
 }  // namespace media