Revert of Refactor parsing and storage of SkGammas

Revert of Refactor parsing and storage of SkGammas (patchset #8 id:280001 of https://codereview.chromium.org/2117773002/ )

Reason for revert:
Tests failing

Original issue's description:
> Refactor parsing and storage of SkGammas
> 
> Benefits:
> (1) Parses and stores gamma tags in a single allocation.
> (2) Recognizes equal gamma tags to skip parsing work and
>     save memory.
> 
> Non-Benefits:
> (1) Not less complicated.
> 
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2117773002
> 
> Committed: https://skia.googlesource.com/skia/+/2ea944c2b710caf29d4795ac953bad14224796f7
> Committed: https://skia.googlesource.com/skia/+/959ccc1f3f49e1ddeb51c32c30ac4a2d94653856

TBR=reed@google.com,brianosman@google.com,mtklein@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/+/456bf30d321292da7f15d1af35fd94fbb6a4bb59

[msarett, 2016-07-20 23:14:00]

The CQ bit was checked by msarett@google.com

[msarett, 2016-07-20 23:14:01]

Created Revert of Refactor parsing and storage of SkGammas

[commit-bot: I haz the power, 2016-07-20 23:14:08]

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, 2016-07-20 23:14:19]

Description was changed from

==========
Revert of Refactor parsing and storage of SkGammas (patchset #8 id:280001 of
https://codereview.chromium.org/2117773002/ )

Reason for revert:
Tests failing

Original issue's description:
> Refactor parsing and storage of SkGammas
> 
> Benefits:
> (1) Parses and stores gamma tags in a single allocation.
> (2) Recognizes equal gamma tags to skip parsing work and
>     save memory.
> 
> Non-Benefits:
> (1) Not less complicated.
> 
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2117773002
> 
> Committed:
https://skia.googlesource.com/skia/+/2ea944c2b710caf29d4795ac953bad14224796f7
> Committed:
https://skia.googlesource.com/skia/+/959ccc1f3f49e1ddeb51c32c30ac4a2d94653856

TBR=reed@google.com,brianosman@google.com,mtklein@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 Refactor parsing and storage of SkGammas (patchset #8 id:280001 of
https://codereview.chromium.org/2117773002/ )

Reason for revert:
Tests failing

Original issue's description:
> Refactor parsing and storage of SkGammas
> 
> Benefits:
> (1) Parses and stores gamma tags in a single allocation.
> (2) Recognizes equal gamma tags to skip parsing work and
>     save memory.
> 
> Non-Benefits:
> (1) Not less complicated.
> 
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2117773002
> 
> Committed:
https://skia.googlesource.com/skia/+/2ea944c2b710caf29d4795ac953bad14224796f7
> Committed:
https://skia.googlesource.com/skia/+/959ccc1f3f49e1ddeb51c32c30ac4a2d94653856

TBR=reed@google.com,brianosman@google.com,mtklein@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/+/456bf30d321292da7f15d1af35fd94fbb6a4bb59
==========

[commit-bot: I haz the power, 2016-07-20 23:14:20]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/456bf30d321292da7f15d1af35fd94fbb6a4bb59