Revert of respect sRGB when converting from sk to gr configs

Revert of respect sRGB when converting from sk to gr configs (patchset #1 id:1 of https://codereview.chromium.org/1756913003/ )

Reason for revert:
Two major regressions from this change:
- Mac images may end up too bright, if they're correctly tagged as sRGB. That's a sub-set of a much larger issue where L32 mode needs to suppress sRGB -> Linear conversion of pretty much everything.
- Various low-end GPUs (Mali400 Android, iPad4) don't render in sRGB at all, causing tests to produce no output at all.

Original issue's description:
> respect sRGB when converting from sk to gr configs
> 
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1756913003
> 
> Committed: https://skia.googlesource.com/skia/+/c6663dc36b157e40c8225130f5970a346f9ba7c3

TBR=reed@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/e79586bf82997477b8bc95469147cd25a8e22ff0

[Brian Osman, 2016-03-03 20:52:38]

Created Revert of respect sRGB when converting from sk to gr configs

[commit-bot: I haz the power, 2016-03-03 20:52:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1759653005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1759653005/1

[commit-bot: I haz the power, 2016-03-03 20:52:56]

Description was changed from

==========
Revert of respect sRGB when converting from sk to gr configs (patchset #1 id:1
of https://codereview.chromium.org/1756913003/ )

Reason for revert:
Two major regressions from this change:
- Mac images may end up too bright, if they're correctly tagged as sRGB. That's
a sub-set of a much larger issue where L32 mode needs to suppress sRGB -> Linear
conversion of pretty much everything.
- Various low-end GPUs (Mali400 Android, iPad4) don't render in sRGB at all,
causing tests to produce no output at all.

Original issue's description:
> respect sRGB when converting from sk to gr configs
> 
> 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/+/c6663dc36b157e40c8225130f5970a346f9ba7c3

TBR=reed@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
==========

to

==========
Revert of respect sRGB when converting from sk to gr configs (patchset #1 id:1
of https://codereview.chromium.org/1756913003/ )

Reason for revert:
Two major regressions from this change:
- Mac images may end up too bright, if they're correctly tagged as sRGB. That's
a sub-set of a much larger issue where L32 mode needs to suppress sRGB -> Linear
conversion of pretty much everything.
- Various low-end GPUs (Mali400 Android, iPad4) don't render in sRGB at all,
causing tests to produce no output at all.

Original issue's description:
> respect sRGB when converting from sk to gr configs
> 
> 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/+/c6663dc36b157e40c8225130f5970a346f9ba7c3

TBR=reed@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed:
https://skia.googlesource.com/skia/+/e79586bf82997477b8bc95469147cd25a8e22ff0
==========

[commit-bot: I haz the power, 2016-03-03 20:52:57]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/e79586bf82997477b8bc95469147cd25a8e22ff0