Reland of Add Jpeg frame writer for test support.

Reland of Add Jpeg frame writer for test support. 

Also, use it to save worst psnr frame in video quality tests. It is indented that these saved frames from perfbots will be uploaded to the cloud and will be available in chrome perf dashboard. Because of that size of the saved frame is somewhat an issue. Also, y4m is not convenient to view.

BUG=webrtc:8030
Review-Url: https://codereview.webrtc.org/2998143002
Cr-Commit-Position: refs/heads/master@{#19450}
Committed: https://chromium.googlesource.com/external/webrtc/+/ee42d19b70f0a536bddc3e9a44fd982b4775ffe6

[ilnik, 2017-08-21 08:10:54]

Created Reland of Add Jpeg frame writer for test support.

[ilnik, 2017-08-21 08:11:58]

Description was changed from

==========
Reland of Add Jpeg frame writer for test support. (patchset #1 id:1 of
https://codereview.webrtc.org/2998133002/ )

Reason for revert:
Reland after fixes for broken targets

Original issue's description:
> Revert of Add Jpeg frame writer for test support. (patchset #12 id:220001 of
https://codereview.webrtc.org/2990563002/ )
> 
> Reason for revert:
> Breaks webrtc.linux
> 
> Original issue's description:
> > Add Jpeg frame writer for test support.
> > 
> > Also, use it to save worst psnr frame in video quality tests. It is indented
that these saved frames from perfbots will be uploaded to the cloud and will be
available in chrome perf dashboard. Because of that size of the saved frame is
somewhat an issue. Also, y4m is not convenient to view.
> > 
> > BUG=webrtc:8030
> > 
> > Review-Url: https://codereview.webrtc.org/2990563002
> > Cr-Commit-Position: refs/heads/master@{#19414}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/26e5cbd6bb38ed734559ab70c...
> 
> TBR=stefan@webrtc.org,pbos@webrtc.org,sprang@webrtc.org,ilnik@webrtc.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=webrtc:8030
> 
> Review-Url: https://codereview.webrtc.org/2998133002
> Cr-Commit-Position: refs/heads/master@{#19419}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/3771ba3002be418e89480f735...

TBR=stefan@webrtc.org,pbos@webrtc.org,sprang@webrtc.org,charujain@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:8030
==========

to

==========
Reland of Add Jpeg frame writer for test support. 

Also, use it to save worst psnr frame in video quality tests. It is indented
that these saved frames from perfbots will be uploaded to the cloud and will be
available in chrome perf dashboard. Because of that size of the saved frame is
somewhat an issue. Also, y4m is not convenient to view.

BUG=webrtc:8030
==========

[oprypin_webrtc, 2017-08-21 09:02:45]

oprypin@webrtc.org changed reviewers:
+ oprypin@webrtc.org

[ilnik, 2017-08-21 09:45:25]

Patchset #2 (id:190001) has been deleted

[ilnik, 2017-08-21 09:52:42]

Patchset #2 (id:210001) has been deleted

[ilnik, 2017-08-21 11:42:00]

The CQ bit was checked by ilnik@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2017-08-21 11:42:04]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[ilnik, 2017-08-21 11:43:34]

sprang, pbos,
Please review.
Comparing to original reverted cl, here I reverted to use gflags because it's
used in test_main, which is the base for webrtc_perf_tests. This way new flags
will work on perfbots. Also fixed libjpeg header include to be more portable.

[commit-bot: I haz the power, 2017-08-21 12:09:54]

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

[commit-bot: I haz the power, 2017-08-21 12:09:55]

Dry run: This issue passed the CQ dry run.

[oprypin_webrtc, 2017-08-21 12:15:38]

Just tried your change on mac, flags work well, so LGTM

[sprang_webrtc, 2017-08-22 08:27:33]

lgtm

[ilnik, 2017-08-22 08:39:26]

The CQ bit was checked by ilnik@webrtc.org

[commit-bot: I haz the power, 2017-08-22 08:39:38]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-08-22 08:45:07]

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

[commit-bot: I haz the power, 2017-08-22 08:45:08]

Try jobs failed on following builders:
  presubmit on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/presubmit/builds/20514)

[ilnik, 2017-08-22 09:35:14]

pbos, please give your approval asap, because this cl is blocking other work on
flags usage in webrtc.
The only change in test/ is a different include in jpeg_frame_writer.cc.
Everything else you have approved already in the original CL.

[oprypin_webrtc, 2017-08-22 10:42:35]

oprypin@webrtc.org changed reviewers:
+ kjellander@webrtc.org

[oprypin_webrtc, 2017-08-22 10:44:26]

kjellander@, if you have time, could you check this instead? (needed for
webrtc/test OWNERS)

Note that this is a reland so only need to check delta from patch set 1

[kjellander_webrtc, 2017-08-22 11:49:20]

lgtm

[ilnik, 2017-08-22 12:08:26]

The CQ bit was checked by ilnik@webrtc.org

[commit-bot: I haz the power, 2017-08-22 12:08:39]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-08-22 14:16:21]

CQ is committing da patch.

Bot data: {"patchset_id": 250001, "attempt_start_ts": 1503403706835730,
"parent_rev": "eb13f5e40048bc4305e35bb9c18d5ce969f63f51", "commit_rev":
"ee42d19b70f0a536bddc3e9a44fd982b4775ffe6"}

[commit-bot: I haz the power, 2017-08-22 14:16:25]

Description was changed from

==========
Reland of Add Jpeg frame writer for test support. 

Also, use it to save worst psnr frame in video quality tests. It is indented
that these saved frames from perfbots will be uploaded to the cloud and will be
available in chrome perf dashboard. Because of that size of the saved frame is
somewhat an issue. Also, y4m is not convenient to view.

BUG=webrtc:8030
==========

to

==========
Reland of Add Jpeg frame writer for test support. 

Also, use it to save worst psnr frame in video quality tests. It is indented
that these saved frames from perfbots will be uploaded to the cloud and will be
available in chrome perf dashboard. Because of that size of the saved frame is
somewhat an issue. Also, y4m is not convenient to view.

BUG=webrtc:8030

Review-Url: https://codereview.webrtc.org/2998143002
Cr-Commit-Position: refs/heads/master@{#19450}
Committed:
https://chromium.googlesource.com/external/webrtc/+/ee42d19b70f0a536bddc3e9a4...
==========

[commit-bot: I haz the power, 2017-08-22 14:16:27]

Committed patchset #3 (id:250001) as
https://chromium.googlesource.com/external/webrtc/+/ee42d19b70f0a536bddc3e9a4...