Port I411ToARGBRow to AVX2.

Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

TBR=harryjin@google.com
BUG=libyuv:555
Committed: https://chromium.googlesource.com/libyuv/libyuv/+/cc33dc68c7ce7e20e820b5519989ea18a73f5113

[fbarchard1, 2016-02-11 03:22:42]

Description was changed from

==========
Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

R=harryjin@google.com
BUG=libyuv:555
==========

to

==========
Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

R=harryjin@google.com
BUG=libyuv:555
==========

[fbarchard1, 2016-02-11 03:23:19]

Was I411ToARGB_Opt (459 ms)
Now I411ToARGB_Opt (324 ms)

95.65%  libyuv_unittest  libyuv_unittest      [.] I411ToARGBRow_AVX2
 0.17%  libyuv_unittest  libyuv_unittest      [.] CopyRow_ERMS

[fbarchard1, 2016-02-12 18:23:53]

Description was changed from

==========
Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

R=harryjin@google.com
BUG=libyuv:555
==========

to

==========
Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

TBR=harryjin@google.com
BUG=libyuv:555
==========

[fbarchard1, 2016-02-12 18:25:55]

try bots passed.

[fbarchard1, 2016-02-12 18:26:14]

Description was changed from

==========
Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

TBR=harryjin@google.com
BUG=libyuv:555
==========

to

==========
Port I411ToARGBRow to AVX2.

An SSSE3 version already exists, and an AVX2 version is available for
Visual C.  This ports the function to AVX2 completing the AVX2 ports of
all YUV to RGB functions for AVX2 on gcc.

TBR=harryjin@google.com
BUG=libyuv:555

Committed:
https://chromium.googlesource.com/libyuv/libyuv/+/cc33dc68c7ce7e20e820b551998...
==========

[fbarchard1, 2016-02-12 18:26:15]

Committed patchset #1 (id:1) manually as
cc33dc68c7ce7e20e820b5519989ea18a73f5113 (presubmit successful).