Use Sk4x4f in srcover_srgb_dst_1.

Use Sk4x4f in srcover_srgb_dst_1.

I've also pulled out the common parts shared with sRGB srcover_n, 
and rearranged to make the similarities a bit more clear.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1829513002

Committed: https://skia.googlesource.com/skia/+/0dfe89248972f701a0a96812ffed801bcc0387b0

[mtklein_C, 2016-03-23 00:19:17]

Description was changed from

==========
Use Sk4x4f in srcover_srgb_dst_1.

This speeds up about 25%.

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

to

==========
Use Sk4x4f in srcover_srgb_dst_1.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[mtklein, 2016-03-23 00:23:25]

Description was changed from

==========
Use Sk4x4f in srcover_srgb_dst_1.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Use Sk4x4f in srcover_srgb_dst_1.

I've also pulled out the common parts shared with sRGB srcover_n, and rearranged
to make the similarities a bit more clear.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[mtklein, 2016-03-23 00:25:32]

Description was changed from

==========
Use Sk4x4f in srcover_srgb_dst_1.

I've also pulled out the common parts shared with sRGB srcover_n, and rearranged
to make the similarities a bit more clear.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Use Sk4x4f in srcover_srgb_dst_1.

I've also pulled out the common parts shared with sRGB srcover_n, 
and rearranged to make the similarities a bit more clear.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[mtklein, 2016-03-23 00:25:44]

The CQ bit was checked by mtklein@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-03-23 00:25:48]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1829513002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1829513002/20001

[mtklein_C, 2016-03-23 00:28:25]

mtklein@chromium.org changed reviewers:
+ reed@google.com
- mtklein@google.com

[mtklein_C, 2016-03-23 00:28:25]

I think this is what you were suggesting I look at next, right?

[commit-bot: I haz the power, 2016-03-23 00:42:25]

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

[commit-bot: I haz the power, 2016-03-23 00:42:26]

Dry run: This issue passed the CQ dry run.

[reed1, 2016-03-23 01:27:02]

yes, this was the place.

wow, 25% is huge. great job!

lgtm

[mtklein, 2016-03-23 01:29:38]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2016-03-23 01:29:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1829513002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1829513002/20001

[commit-bot: I haz the power, 2016-03-23 01:30:47]

Description was changed from

==========
Use Sk4x4f in srcover_srgb_dst_1.

I've also pulled out the common parts shared with sRGB srcover_n, 
and rearranged to make the similarities a bit more clear.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Use Sk4x4f in srcover_srgb_dst_1.

I've also pulled out the common parts shared with sRGB srcover_n, 
and rearranged to make the similarities a bit more clear.

This speeds up about 25%.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/0dfe89248972f701a0a96812ffed801bcc0387b0
==========

[commit-bot: I haz the power, 2016-03-23 01:30:48]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/0dfe89248972f701a0a96812ffed801bcc0387b0