Update the version of libpng used by Skia tests

Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version - 1.6.20 (http://sourceforge.net/p/libpng/code/ci/047737496a77eeb97f9991919dac08ca3c149711/).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1453373003

Committed: https://skia.googlesource.com/skia/+/77b798ce8e8616e8cb0e82a22ad9eb4f69eb271f

[scroggo, 2015-11-18 16:04:48]

scroggo@google.com changed reviewers:
+ scroggo@google.com

[scroggo, 2015-11-18 16:04:49]

not lgtm

This should work once skia.googlesource gets updated (tested locally by pulling
in the right commit from upstream), but we should not submit it before then (CQ
should catch us anyway, but just in case...)

https://codereview.chromium.org/1453373003/diff/1/DEPS
File DEPS (right):

https://codereview.chromium.org/1453373003/diff/1/DEPS#newcode22
DEPS:22: "third_party/externals/libpng"  :
"https://skia.googlesource.com/third_party/libpng.git@b9c62013efb0519456a6a407beb30f10ef3a3a42",
This commit does not yet exist in googlesource. Held up on b/25761253 /
skbug.com/4573

[scroggo_chromium, 2016-02-19 02:08:47]

Description was changed from

==========
Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version
(http://sourceforge.net/p/libpng/code/ci/b9c62013efb0519456a6a407beb30f10ef3a3...).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
==========

to

==========
Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version
(http://sourceforge.net/p/libpng/code/ci/b9c62013efb0519456a6a407beb30f10ef3a3...).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[scroggo, 2016-02-19 02:11:05]

On 2015/11/18 16:04:49, scroggo wrote:
> not lgtm
> 
> This should work once skia.googlesource gets updated (tested locally by
pulling
> in the right commit from upstream), but we should not submit it before then
(CQ
> should catch us anyway, but just in case...)
> 
> https://codereview.chromium.org/1453373003/diff/1/DEPS
> File DEPS (right):
> 
> https://codereview.chromium.org/1453373003/diff/1/DEPS#newcode22
> DEPS:22: "third_party/externals/libpng"  :
>
"https://skia.googlesource.com/third_party/libpng.git@b9c62013efb0519456a6a407beb30f10ef3a3a42",
> This commit does not yet exist in googlesource. Held up on b/25761253 /
> skbug.com/4573

b/25761253 looks to be fixed. I don't know how to remove my disapproval without
approving, so LGTM!

[scroggo, 2016-02-19 02:11:32]

scroggo@google.com changed reviewers:
+ msarett@google.com

[scroggo, 2016-02-19 02:12:54]

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

[commit-bot: I haz the power, 2016-02-19 02:13:05]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1453373003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1453373003/20001

[scroggo, 2016-02-19 02:22:33]

Description was changed from

==========
Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version
(http://sourceforge.net/p/libpng/code/ci/b9c62013efb0519456a6a407beb30f10ef3a3...).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version - 1.6.20
(http://sourceforge.net/p/libpng/code/ci/047737496a77eeb97f9991919dac08ca3c149...).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[msarett, 2016-02-19 13:41:28]

lgtm

I may try to make another quick update if I am able to upstream the sse2 filter
opts soon.

[msarett, 2016-02-19 13:43:23]

Actually, the optimizations have just been merged into upstream...  This is fine
to land, but I need to figure out how to get Skia and Android on this even newer
version.

[scroggo, 2016-02-19 13:57:18]

The CQ bit was checked by scroggo@google.com

[scroggo, 2016-02-19 13:57:18]

The patchset sent to the CQ was uploaded after l-g-t-m from scroggo@google.com
Link to the patchset: https://codereview.chromium.org/1453373003/#ps40001
(title: "1.6.20")

[commit-bot: I haz the power, 2016-02-19 13:57:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1453373003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1453373003/40001

[commit-bot: I haz the power, 2016-02-19 14:33:10]

Description was changed from

==========
Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version - 1.6.20
(http://sourceforge.net/p/libpng/code/ci/047737496a77eeb97f9991919dac08ca3c149...).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Update the version of libpng used by Skia tests

The version of libpng we were using has some security vulnerabilities.
Update to a newer version - 1.6.20
(http://sourceforge.net/p/libpng/code/ci/047737496a77eeb97f9991919dac08ca3c149...).

Update pnglibconf.h. The new version is a copy of the newer version of
the file, with our /* custom settings */ tacked onto the end. (The
custom settings are unchanged from the last version.)

Update the LICENSE. The new version is a copy of the LICENSE that
libpng now includes as a separate file.

Update the README file to reflect the change in source of the LICENSE
file.

BUG=skia:4573
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/77b798ce8e8616e8cb0e82a22ad9eb4f69eb271f
==========

[commit-bot: I haz the power, 2016-02-19 14:33:11]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/77b798ce8e8616e8cb0e82a22ad9eb4f69eb271f