Never use CPU-built mips for Gray_8.

Never use CPU-built mips for Gray_8.

Fixes a bug where Gray_8 textures would still render as Alpha_8 (if the
first draw was detected as needing mips).

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2088883002

Committed: https://skia.googlesource.com/skia/+/7e5e594ea6fe0179b35e9d6ecb9d40cf0313f564

[Brian Osman, 2016-06-21 17:55:30]

Description was changed from

==========
Never use CPU-built mips for Gray_8.

Fixes a bug where Gray_8 textures would still render as Alpha_8 (if the
first draw was detected as needing mips).

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

to

==========
Never use CPU-built mips for Gray_8.

Fixes a bug where Gray_8 textures would still render as Alpha_8 (if the
first draw was detected as needing mips).

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2088883002
==========

[Brian Osman, 2016-06-21 17:55:40]

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

[commit-bot: I haz the power, 2016-06-21 17:55:46]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2088883002/1

[Brian Osman, 2016-06-21 17:56:30]

brianosman@google.com changed reviewers:
+ bsalomon@google.com, cblume@chromium.org

[commit-bot: I haz the power, 2016-06-21 18:13:25]

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

[commit-bot: I haz the power, 2016-06-21 18:13:26]

Dry run: This issue passed the CQ dry run.

[bsalomon, 2016-06-21 18:57:40]

lgtm, but it would be nice to have a test. Maybe we can add a case to
deferredtextureimage_medium after it lands. I'm ok with landing as is and
following up with test case.

https://codereview.chromium.org/2088883002/diff/1/src/gpu/SkGr.cpp
File src/gpu/SkGr.cpp (right):

https://codereview.chromium.org/2088883002/diff/1/src/gpu/SkGr.cpp#newcode357
src/gpu/SkGr.cpp:357: if (kGray_8_SkColorType == bitmap.colorType()) {
Chris, I think we'll a similar failure mode for the deferred image texture data
code path.

[Brian Osman, 2016-06-21 19:07:19]

The CQ bit was checked by brianosman@google.com

[commit-bot: I haz the power, 2016-06-21 19:07:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2088883002/1

[commit-bot: I haz the power, 2016-06-21 19:08:27]

Description was changed from

==========
Never use CPU-built mips for Gray_8.

Fixes a bug where Gray_8 textures would still render as Alpha_8 (if the
first draw was detected as needing mips).

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2088883002
==========

to

==========
Never use CPU-built mips for Gray_8.

Fixes a bug where Gray_8 textures would still render as Alpha_8 (if the
first draw was detected as needing mips).

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2088883002

Committed:
https://skia.googlesource.com/skia/+/7e5e594ea6fe0179b35e9d6ecb9d40cf0313f564
==========

[commit-bot: I haz the power, 2016-06-21 19:08:29]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/7e5e594ea6fe0179b35e9d6ecb9d40cf0313f564