spin off some safe parts from AVX2 CL

spin off some safe parts from AVX2 CL

(reviewed here https://codereview.chromium.org/1532613002/)

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1628333003
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Committed: https://skia.googlesource.com/skia/+/20473344b223023e1adea692cb93ae4a4c96bbc8

[mtklein_C, 2016-01-25 17:09:34]

Description was changed from

==========
spin off some safe parts from AVX2 CL

(https://codereview.chromium.org/1532613002/)

BUG=skia:
==========

to

==========
spin off some safe parts from AVX2 CL

(https://codereview.chromium.org/1532613002/)

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

[mtklein_C, 2016-01-25 17:10:10]

The CQ bit was checked by mtklein@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-01-25 17:10:17]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1628333003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1628333003/1

[commit-bot: I haz the power, 2016-01-25 17:22:20]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-01-25 17:22:20]

Dry run: This issue passed the CQ dry run.

[mtklein_C, 2016-01-25 17:25:26]

Description was changed from

==========
spin off some safe parts from AVX2 CL

(https://codereview.chromium.org/1532613002/)

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

to

==========
spin off some safe parts from AVX2 CL

(reviewed here https://codereview.chromium.org/1532613002/)

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

[mtklein, 2016-01-25 17:25:55]

mtklein@google.com changed reviewers:
+ mtklein@google.com

[mtklein, 2016-01-25 17:25:55]

The CQ bit was checked by mtklein@google.com

[mtklein, 2016-01-25 17:25:56]

lgtm

[commit-bot: I haz the power, 2016-01-25 17:26:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1628333003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1628333003/1

[commit-bot: I haz the power, 2016-01-25 17:26:56]

Description was changed from

==========
spin off some safe parts from AVX2 CL

(reviewed here https://codereview.chromium.org/1532613002/)

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
==========

to

==========
spin off some safe parts from AVX2 CL

(reviewed here https://codereview.chromium.org/1532613002/)

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot

Committed:
https://skia.googlesource.com/skia/+/20473344b223023e1adea692cb93ae4a4c96bbc8
==========

[commit-bot: I haz the power, 2016-01-25 17:26:56]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/20473344b223023e1adea692cb93ae4a4c96bbc8