FirstMeaningfulPaint UMA: Reduce the network activity threshold

FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FirstMeaningfulPaint is in the range
of [network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Committed: https://crrev.com/ffeb48f2494314b85493ad8fc0c54dbb1b4a44a1
Cr-Commit-Position: refs/heads/master@{#419638}

[Kunihiko Sakamoto, 2016-09-14 06:23:27]

Description was changed from

==========
2.0sec -> 0.5sec

BUG=
==========

to

==========
2.0sec -> 0.5sec

BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[Kunihiko Sakamoto, 2016-09-14 06:23:35]

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

[commit-bot: I haz the power, 2016-09-14 06:23:51]

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

[Kunihiko Sakamoto, 2016-09-14 07:14:09]

Description was changed from

==========
2.0sec -> 0.5sec

BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FMP is in the range of
[network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[Kunihiko Sakamoto, 2016-09-14 07:32:26]

Description was changed from

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FMP is in the range of
[network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FirstMeaningfulPaint is in the range
of [network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[Kunihiko Sakamoto, 2016-09-14 07:42:26]

ksakamoto@chromium.org changed reviewers:
+ bmcquade@chromium.org, kouhei@chromium.org

[commit-bot: I haz the power, 2016-09-14 10:03:13]

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

[commit-bot: I haz the power, 2016-09-14 10:03:14]

Dry run: This issue passed the CQ dry run.

[kouhei (in TOK), 2016-09-14 10:36:32]

lgtm

[Bryan McQuade, 2016-09-19 17:31:16]

lgtm

[Kunihiko Sakamoto, 2016-09-20 00:26:44]

The CQ bit was checked by ksakamoto@chromium.org

[commit-bot: I haz the power, 2016-09-20 00:27:36]

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, 2016-09-20 01:49:58]

Description was changed from

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FirstMeaningfulPaint is in the range
of [network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FirstMeaningfulPaint is in the range
of [network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[commit-bot: I haz the power, 2016-09-20 01:49:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-20 01:51:22]

Description was changed from

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FirstMeaningfulPaint is in the range
of [network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
FirstMeaningfulPaint UMA: Reduce the network activity threshold

This patch changes the duration FirstMeaningfulPaintDetector waits
before reporting FirstMeaningfulPaint from 2.0sec to 0.5sec.

This is safe because only 0.18% of FirstMeaningfulPaint is in the range
of [network stable - 2sec, network stable - 0.5sec].

BUG=632081
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Committed: https://crrev.com/ffeb48f2494314b85493ad8fc0c54dbb1b4a44a1
Cr-Commit-Position: refs/heads/master@{#419638}
==========

[commit-bot: I haz the power, 2016-09-20 01:51:23]

Patchset 1 (id:??) landed as
https://crrev.com/ffeb48f2494314b85493ad8fc0c54dbb1b4a44a1
Cr-Commit-Position: refs/heads/master@{#419638}