Convert XYZ values from PNGs to D50

Convert XYZ values from PNGs to D50

Previously, we were storing whatever values we got out of the file
and pretending they were D50.  Brian has demonstrated that this
doesn't really work.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2180483003

Committed: https://skia.googlesource.com/skia/+/554479527c669733ea0ef6c1dedd2c9d1773d784

[msarett, 2016-07-22 20:03:50]

Description was changed from

==========
Convert XYZ values from PNGs to D50

Previously, we were storing whatever values we got out of the file
and pretending they were D50.  Brian has demonstrated that this
doesn't really work.

BUG=skia:
==========

to

==========
Convert XYZ values from PNGs to D50

Previously, we were storing whatever values we got out of the file
and pretending they were D50.  Brian has demonstrated that this
doesn't really work.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2180483003
==========

[msarett, 2016-07-22 20:06:01]

Patchset #1 (id:1) has been deleted

[msarett, 2016-07-22 20:06:39]

msarett@google.com changed reviewers:
+ brianosman@google.com, herb@google.com, mtklein@google.com, reed@google.com

[Brian Osman, 2016-07-22 20:16:03]

This fixed the white-point issues I was seeing in my gamut conversion code, so
yay!

lgtm (modulo double-precision literals).

[msarett, 2016-07-22 20:41:00]

The CQ bit was checked by msarett@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-07-22 20:41:08]

Dry run: 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, 2016-07-22 21:04:02]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-07-22 21:04:03]

Dry run: This issue passed the CQ dry run.

[msarett, 2016-07-22 21:06:31]

The CQ bit was checked by msarett@google.com

[commit-bot: I haz the power, 2016-07-22 21:06:34]

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, 2016-07-22 21:07:25]

Description was changed from

==========
Convert XYZ values from PNGs to D50

Previously, we were storing whatever values we got out of the file
and pretending they were D50.  Brian has demonstrated that this
doesn't really work.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2180483003
==========

to

==========
Convert XYZ values from PNGs to D50

Previously, we were storing whatever values we got out of the file
and pretending they were D50.  Brian has demonstrated that this
doesn't really work.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2180483003

Committed:
https://skia.googlesource.com/skia/+/554479527c669733ea0ef6c1dedd2c9d1773d784
==========

[commit-bot: I haz the power, 2016-07-22 21:07:26]

Committed patchset #2 (id:40001) as
https://skia.googlesource.com/skia/+/554479527c669733ea0ef6c1dedd2c9d1773d784