Revert of de-proc sk_float_rsqrt

Revert of de-proc sk_float_rsqrt (patchset #3 id:40001 of https://codereview.chromium.org/1616013003/ )

Reason for revert:
This is somehow blocking the Google3 roll in ways neither Ben nor I understand.  Precautionary revert... will try again Monday.

Original issue's description:
> de-proc sk_float_rsqrt
> 
> This is the first of many little baby steps to have us stop runtime-detecting NEON.
> 
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1616013003
> CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
> 
> Committed: https://skia.googlesource.com/skia/+/efcc125acd2d71eb077caf6db65fdd6b9eb1dc0d

TBR=reed@google.com,mtklein@chromium.org
# 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/+/ed814f34c72248c7eecf3b0a5f335c3a7c2e9dd1

[mtklein, 2016-01-22 19:51:30]

Created Revert of de-proc sk_float_rsqrt

[commit-bot: I haz the power, 2016-01-22 19:51:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1629503002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1629503002/1

[commit-bot: I haz the power, 2016-01-22 19:51:42]

Description was changed from

==========
Revert of de-proc sk_float_rsqrt (patchset #3 id:40001 of
https://codereview.chromium.org/1616013003/ )

Reason for revert:
This is somehow blocking the Google3 roll in ways neither Ben nor I understand. 
Precautionary revert... will try again Monday.

Original issue's description:
> de-proc sk_float_rsqrt
> 
> This is the first of many little baby steps to have us stop runtime-detecting
NEON.
> 
> BUG=skia:
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
>
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
> 
> Committed:
https://skia.googlesource.com/skia/+/efcc125acd2d71eb077caf6db65fdd6b9eb1dc0d

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

to

==========
Revert of de-proc sk_float_rsqrt (patchset #3 id:40001 of
https://codereview.chromium.org/1616013003/ )

Reason for revert:
This is somehow blocking the Google3 roll in ways neither Ben nor I understand. 
Precautionary revert... will try again Monday.

Original issue's description:
> de-proc sk_float_rsqrt
> 
> This is the first of many little baby steps to have us stop runtime-detecting
NEON.
> 
> BUG=skia:
> GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
>
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
> 
> Committed:
https://skia.googlesource.com/skia/+/efcc125acd2d71eb077caf6db65fdd6b9eb1dc0d

TBR=reed@google.com,mtklein@chromium.org
# 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/+/ed814f34c72248c7eecf3b0a5f335c3a7c2e9dd1
==========

[commit-bot: I haz the power, 2016-01-22 19:51:43]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/ed814f34c72248c7eecf3b0a5f335c3a7c2e9dd1