Remove all usage of SkSurfaceProps::isGammaCorrect()

Remove all usage of SkSurfaceProps::isGammaCorrect()

DrawContext's isGammaCorrect now just based on presence of color space.
Next change will remove the function and flag entirely, but I wanted to
land this separately. This alters a few GMs in srgb/f16 mode, generally
those that are creating off-screen surfaces in ways that were somewhat
lossy before. No unexplained changes.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186633002

Committed: https://skia.googlesource.com/skia/+/9dc935fa11521d4a6c7875699c050044a45d0871

[Brian Osman, 2016-07-26 16:49:47]

Description was changed from

==========
Remove all usage of SkSurfaceProps::isGammaCorrect()

DrawContext's isGammaCorrect now just based on presence of color space.
Next change will remove the function and flag entirely, but I wanted to
land this separately. This alters a few GMs in srgb/f16 mode, generally
those that are creating off-screen surfaces in ways that were somewhat
lossy before. No unexplained changes.

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

to

==========
Remove all usage of SkSurfaceProps::isGammaCorrect()

DrawContext's isGammaCorrect now just based on presence of color space.
Next change will remove the function and flag entirely, but I wanted to
land this separately. This alters a few GMs in srgb/f16 mode, generally
those that are creating off-screen surfaces in ways that were somewhat
lossy before. No unexplained changes.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186633002
==========

[Brian Osman, 2016-07-26 16:50:24]

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

[commit-bot: I haz the power, 2016-07-26 16:50:31]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Brian Osman, 2016-07-26 16:50:44]

brianosman@google.com changed reviewers:
+ bsalomon@google.com, mtklein@google.com, reed@google.com

[commit-bot: I haz the power, 2016-07-26 17:14:30]

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

[commit-bot: I haz the power, 2016-07-26 17:14:30]

Dry run: This issue passed the CQ dry run.

[mtklein, 2016-07-26 17:17:20]

unfamiliar with the code, but lgtm

[bsalomon, 2016-07-26 17:18:49]

lgtm

[Brian Osman, 2016-07-26 17:20:56]

The CQ bit was checked by brianosman@google.com

[commit-bot: I haz the power, 2016-07-26 17:21:01]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-26 17:21:57]

Description was changed from

==========
Remove all usage of SkSurfaceProps::isGammaCorrect()

DrawContext's isGammaCorrect now just based on presence of color space.
Next change will remove the function and flag entirely, but I wanted to
land this separately. This alters a few GMs in srgb/f16 mode, generally
those that are creating off-screen surfaces in ways that were somewhat
lossy before. No unexplained changes.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186633002
==========

to

==========
Remove all usage of SkSurfaceProps::isGammaCorrect()

DrawContext's isGammaCorrect now just based on presence of color space.
Next change will remove the function and flag entirely, but I wanted to
land this separately. This alters a few GMs in srgb/f16 mode, generally
those that are creating off-screen surfaces in ways that were somewhat
lossy before. No unexplained changes.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186633002

Committed:
https://skia.googlesource.com/skia/+/9dc935fa11521d4a6c7875699c050044a45d0871
==========

[commit-bot: I haz the power, 2016-07-26 17:21:58]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/9dc935fa11521d4a6c7875699c050044a45d0871