Fix DocWriteEvaluator bg paint metrics

Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

BUG=608709
Committed: https://crrev.com/6e99bfdeeae1c67b539898d0cbade15708c3be7e
Cr-Commit-Position: refs/heads/master@{#391251}

[Charlie Harrison, 2016-05-03 13:40:19]

Description was changed from

==========
Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

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

to

==========
Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

BUG=608709
==========

[Charlie Harrison, 2016-05-03 13:40:19]

csharrison@chromium.org changed reviewers:
+ bmcquade@chromium.org

[Charlie Harrison, 2016-05-03 13:40:39]

PTAL. Not a super high priority metric but it should be fixed.

[Bryan McQuade, 2016-05-03 13:58:06]

lgtm

[Charlie Harrison, 2016-05-03 15:43:20]

The CQ bit was checked by csharrison@chromium.org

[commit-bot: I haz the power, 2016-05-03 15:44:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1942033002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1942033002/1

[commit-bot: I haz the power, 2016-05-03 16:18:40]

Description was changed from

==========
Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

BUG=608709
==========

to

==========
Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

BUG=608709
==========

[commit-bot: I haz the power, 2016-05-03 16:18:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-03 16:19:44]

Description was changed from

==========
Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

BUG=608709
==========

to

==========
Fix DocWriteEvaluator bg paint metrics

Some background histograms were logging page loads that never painted
as 0-ms paints.

BUG=608709

Committed: https://crrev.com/6e99bfdeeae1c67b539898d0cbade15708c3be7e
Cr-Commit-Position: refs/heads/master@{#391251}
==========

[commit-bot: I haz the power, 2016-05-03 16:19:45]

Patchset 1 (id:??) landed as
https://crrev.com/6e99bfdeeae1c67b539898d0cbade15708c3be7e
Cr-Commit-Position: refs/heads/master@{#391251}