Revert of Add a class representing texture swizzle.

Revert of Add a class representing texture swizzle. (patchset #6 id:100001 of https://codereview.chromium.org/1567733005/ )

Reason for revert:
Shader compilation failures when implicitly converting vec4 to float.

https://uberchromegw.corp.google.com/i/client.skia/builders/Test-Win8-MSVC-ShuttleA-GPU-GTX960-x86_64-Debug/builds/3266/steps/dm/logs/stdio

https://uberchromegw.corp.google.com/i/client.skia.android/builders/Test-Android-GCC-Nexus6-GPU-Adreno420-Arm7-Debug/builds/3154/steps/dm/logs/stdio

Original issue's description:
> Add a class representing texture swizzle.
> 
> Store config swizzle GrGLCaps and shader swizzles in GrGLSLCaps.
> 
> Remove GrTextureAccess's swizzle and update users of it to swizzle in their shader code.
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1567733005
> 
> Committed: https://skia.googlesource.com/skia/+/1a1efeacf7cc94a8c2977114dfe230fed3efc105

TBR=egdaniel@google.com,bsalomon@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://skia.googlesource.com/skia/+/3183a4136364cfe18b3584302e71ea528a018401

[mtklein, 2016-01-08 20:11:15]

Created Revert of Add a class representing texture swizzle.

[commit-bot: I haz the power, 2016-01-08 20:11:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1569393002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1569393002/1

[commit-bot: I haz the power, 2016-01-08 20:11:41]

Description was changed from

==========
Revert of Add a class representing texture swizzle. (patchset #6 id:100001 of
https://codereview.chromium.org/1567733005/ )

Reason for revert:
Shader compilation failures when implicitly converting vec4 to float.

https://uberchromegw.corp.google.com/i/client.skia/builders/Test-Win8-MSVC-Sh...

https://uberchromegw.corp.google.com/i/client.skia.android/builders/Test-Andr...

Original issue's description:
> Add a class representing texture swizzle.
> 
> Store config swizzle GrGLCaps and shader swizzles in GrGLSLCaps.
> 
> Remove GrTextureAccess's swizzle and update users of it to swizzle in their
shader code.
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/1a1efeacf7cc94a8c2977114dfe230fed3efc105

TBR=egdaniel@google.com,bsalomon@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Add a class representing texture swizzle. (patchset #6 id:100001 of
https://codereview.chromium.org/1567733005/ )

Reason for revert:
Shader compilation failures when implicitly converting vec4 to float.

https://uberchromegw.corp.google.com/i/client.skia/builders/Test-Win8-MSVC-Sh...

https://uberchromegw.corp.google.com/i/client.skia.android/builders/Test-Andr...

Original issue's description:
> Add a class representing texture swizzle.
> 
> Store config swizzle GrGLCaps and shader swizzles in GrGLSLCaps.
> 
> Remove GrTextureAccess's swizzle and update users of it to swizzle in their
shader code.
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
> 
> Committed:
https://skia.googlesource.com/skia/+/1a1efeacf7cc94a8c2977114dfe230fed3efc105

TBR=egdaniel@google.com,bsalomon@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed:
https://skia.googlesource.com/skia/+/3183a4136364cfe18b3584302e71ea528a018401
==========

[commit-bot: I haz the power, 2016-01-08 20:11:41]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/3183a4136364cfe18b3584302e71ea528a018401