PNG: Use frame width when applying color xform

PNG: Use frame width when applying color xform

The row provided by libpng will only be as wide as the frame, so pass
that width to the color xform.

Similarly, for an opaque image, only apply the color xform to the
frame's width. The buffer may be wider (e.g. if the frame starts at
(0, y)), but these are the only pixels that have changed.

BUG=703397
Review-Url: https://codereview.chromium.org/2761193003
Cr-Commit-Position: refs/heads/master@{#458728}
Committed: https://chromium.googlesource.com/chromium/src/+/0fa5516411db46950188474b9382157d75810208

[scroggo_chromium, 2017-03-21 17:22:22]

scroggo@chromium.org changed reviewers:
+ msarett@chromium.org

[msarett1, 2017-03-21 17:26:35]

Thought it was probably something like this... thanks!

lgtm

[scroggo_chromium, 2017-03-21 17:30:01]

The CQ bit was checked by scroggo@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-21 17:30:45]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[scroggo_chromium, 2017-03-21 17:32:37]

scroggo@chromium.org changed reviewers:
+ pkasting@chromium.org

[scroggo_chromium, 2017-03-21 17:32:37]

pkasting@, ptal

[commit-bot: I haz the power, 2017-03-21 19:17:44]

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

[commit-bot: I haz the power, 2017-03-21 19:17:45]

Dry run: This issue passed the CQ dry run.

[Peter Kasting, 2017-03-21 22:40:20]

RS LGTM

(can't see the original bug and don't fully understand this bug, but the
explanation makes sense)

[scroggo_chromium, 2017-03-22 13:13:23]

The CQ bit was checked by scroggo@chromium.org

[commit-bot: I haz the power, 2017-03-22 13:13:35]

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, 2017-03-22 13:16:50]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490188403073360, "parent_rev":
"f7ea59441bc8b99523126a57929559c2137f04d4", "commit_rev":
"0fa5516411db46950188474b9382157d75810208"}

[commit-bot: I haz the power, 2017-03-22 13:17:38]

Description was changed from

==========
PNG: Use frame width when applying color xform

The row provided by libpng will only be as wide as the frame, so pass
that width to the color xform.

Similarly, for an opaque image, only apply the color xform to the
frame's width. The buffer may be wider (e.g. if the frame starts at
(0, y)), but these are the only pixels that have changed.

BUG=703397
==========

to

==========
PNG: Use frame width when applying color xform

The row provided by libpng will only be as wide as the frame, so pass
that width to the color xform.

Similarly, for an opaque image, only apply the color xform to the
frame's width. The buffer may be wider (e.g. if the frame starts at
(0, y)), but these are the only pixels that have changed.

BUG=703397

Review-Url: https://codereview.chromium.org/2761193003
Cr-Commit-Position: refs/heads/master@{#458728}
Committed:
https://chromium.googlesource.com/chromium/src/+/0fa5516411db46950188474b9382...
==========

[commit-bot: I haz the power, 2017-03-22 13:17:39]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/0fa5516411db46950188474b9382...