Revert of More robust check for sRGB gamma tables

Revert of More robust check for sRGB gamma tables (patchset #2 id:60001 of https://codereview.chromium.org/2263233003/ )

Reason for revert:
From the previous commit message:
"This check is not fast.  If we find that it doesn't help
us recognize sRGB curves, we should delete it."

Turns out it doesn't help.  Looks to me like the tables are not sRGB.

Original issue's description:
> More robust check for sRGB gamma tables
> 
> This is in response to a UMA showing that 5% dst gammas are
> unidentified tables.  We want to see if some of these tables
> should be marked as sRGB.
> https://uma.googleplex.com/p/chrome/histograms?endDate=latest&dayCount=1&histograms=Blink.ColorSpace.Destination&fixupData=true&showMax=true&filters=isofficial%2Ceq%2CTrue&implicitFilters=isofficial
> 
> This check is not fast.  If we find that it doesn't help
> us recognize sRGB curves, we should delete it.
> 
> BUG=skia:5656
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2263233003
> 
> Committed: https://skia.googlesource.com/skia/+/4ff08df15a8042cdb4fc90a82e1044847d0de300

TBR=mtklein@google.com,brianosman@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:5656
Committed: https://skia.googlesource.com/skia/+/e54f4b7cf395665bbe1d6ee397d50f4c0fc4fd04

[msarett, 2016-09-06 20:25:20]

The CQ bit was checked by msarett@google.com

[msarett, 2016-09-06 20:25:20]

Created Revert of More robust check for sRGB gamma tables

[commit-bot: I haz the power, 2016-09-06 20:25:31]

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, 2016-09-06 21:41:43]

Description was changed from

==========
Revert of More robust check for sRGB gamma tables (patchset #2 id:60001 of
https://codereview.chromium.org/2263233003/ )

Reason for revert:
From the previous commit message:
"This check is not fast.  If we find that it doesn't help
us recognize sRGB curves, we should delete it."

Turns out it doesn't help.  Looks to me like the tables are not sRGB.

Original issue's description:
> More robust check for sRGB gamma tables
> 
> This is in response to a UMA showing that 5% dst gammas are
> unidentified tables.  We want to see if some of these tables
> should be marked as sRGB.
>
https://uma.googleplex.com/p/chrome/histograms?endDate=latest&dayCount=1&hist...
> 
> This check is not fast.  If we find that it doesn't help
> us recognize sRGB curves, we should delete it.
> 
> BUG=skia:5656
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2263233003
> 
> Committed:
https://skia.googlesource.com/skia/+/4ff08df15a8042cdb4fc90a82e1044847d0de300

TBR=mtklein@google.com,brianosman@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:5656
==========

to

==========
Revert of More robust check for sRGB gamma tables (patchset #2 id:60001 of
https://codereview.chromium.org/2263233003/ )

Reason for revert:
From the previous commit message:
"This check is not fast.  If we find that it doesn't help
us recognize sRGB curves, we should delete it."

Turns out it doesn't help.  Looks to me like the tables are not sRGB.

Original issue's description:
> More robust check for sRGB gamma tables
> 
> This is in response to a UMA showing that 5% dst gammas are
> unidentified tables.  We want to see if some of these tables
> should be marked as sRGB.
>
https://uma.googleplex.com/p/chrome/histograms?endDate=latest&dayCount=1&hist...
> 
> This check is not fast.  If we find that it doesn't help
> us recognize sRGB curves, we should delete it.
> 
> BUG=skia:5656
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2263233003
> 
> Committed:
https://skia.googlesource.com/skia/+/4ff08df15a8042cdb4fc90a82e1044847d0de300

TBR=mtklein@google.com,brianosman@google.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:5656

Committed:
https://skia.googlesource.com/skia/+/e54f4b7cf395665bbe1d6ee397d50f4c0fc4fd04
==========

[commit-bot: I haz the power, 2016-09-06 21:41:44]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/e54f4b7cf395665bbe1d6ee397d50f4c0fc4fd04