Remove unnecessary check

Remove unnecessary check

Follow-on from crrev.com/1996993003

No need to check the alpha type. If the color type is gray, the
source alpha type will be opaque.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2002723002

Committed: https://skia.googlesource.com/skia/+/1a3619236b5363821b58698a8731168803bd29fe

[scroggo_chromium, 2016-05-20 21:11:32]

Description was changed from

==========
Remove unnecessary check

Follow-on from crrev.com/1996993003

No need to check the alpha type. If the color type is gray, the
source alpha type will be opaque.
==========

to

==========
Remove unnecessary check

Follow-on from crrev.com/1996993003

No need to check the alpha type. If the color type is gray, the
source alpha type will be opaque.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2002723002
==========

[scroggo, 2016-05-20 21:12:26]

scroggo@google.com changed reviewers:
+ msarett@google.com, scroggo@google.com

[scroggo, 2016-05-20 21:12:30]

The CQ bit was checked by scroggo@google.com

[commit-bot: I haz the power, 2016-05-20 21:12:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2002723002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2002723002/1

[commit-bot: I haz the power, 2016-05-20 21:12:42]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2016-05-21 03:12 UTC

[reed1, 2016-05-20 21:13:37]

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

[reed1, 2016-05-20 21:13:38]

lgtm

[commit-bot: I haz the power, 2016-05-20 21:27:18]

Description was changed from

==========
Remove unnecessary check

Follow-on from crrev.com/1996993003

No need to check the alpha type. If the color type is gray, the
source alpha type will be opaque.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2002723002
==========

to

==========
Remove unnecessary check

Follow-on from crrev.com/1996993003

No need to check the alpha type. If the color type is gray, the
source alpha type will be opaque.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2002723002

Committed:
https://skia.googlesource.com/skia/+/1a3619236b5363821b58698a8731168803bd29fe
==========

[commit-bot: I haz the power, 2016-05-20 21:27:20]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/1a3619236b5363821b58698a8731168803bd29fe