Add DocWrite.Block metric for NavigationToFirstContentfulPaint.

Add DocWrite.Block metric for NavigationToFirstContentfulPaint.

We have ParseStartToFirstContentfulPaint for DocWrite.Block, which is
useful for understanding the exact impact of the change on the period
from parse start to FCP, but it's also important to measure the overall
time from navigation to FCP. This change adds a metric to track this
overall time.

BUG=626945
TBR=shivanisha
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2140443002
Cr-Commit-Position: refs/heads/master@{#404660}
(cherry picked from commit 10ff30f72b8ac4d842ea154f29420a946a463b66)

[Bryan McQuade, 2016-07-16 17:05:20]

The CQ bit was checked by bmcquade@chromium.org

[commit-bot: I haz the power, 2016-07-16 17:05:26]

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, 2016-07-16 17:05:26]

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

[commit-bot: I haz the power, 2016-07-16 17:05:27]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Bryan McQuade, 2016-07-16 17:07:01]

Description was changed from

==========
Add DocWrite.Block metric for NavigationToFirstContentfulPaint.

We have ParseStartToFirstContentfulPaint for DocWrite.Block, which is
useful for understanding the exact impact of the change on the period
from parse start to FCP, but it's also important to measure the overall
time from navigation to FCP. This change adds a metric to track this
overall time.

BUG=626945

Review-Url: https://codereview.chromium.org/2140443002
Cr-Commit-Position: refs/heads/master@{#404660}
(cherry picked from commit 10ff30f72b8ac4d842ea154f29420a946a463b66)
==========

to

==========
Add DocWrite.Block metric for NavigationToFirstContentfulPaint.

We have ParseStartToFirstContentfulPaint for DocWrite.Block, which is
useful for understanding the exact impact of the change on the period
from parse start to FCP, but it's also important to measure the overall
time from navigation to FCP. This change adds a metric to track this
overall time.

BUG=626945
TBR=shivanisha

Review-Url: https://codereview.chromium.org/2140443002
Cr-Commit-Position: refs/heads/master@{#404660}
(cherry picked from commit 10ff30f72b8ac4d842ea154f29420a946a463b66)
==========

[Bryan McQuade, 2016-07-16 17:07:05]

The CQ bit was checked by bmcquade@chromium.org

[commit-bot: I haz the power, 2016-07-16 17:07:17]

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, 2016-07-16 17:07:18]

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

[commit-bot: I haz the power, 2016-07-16 17:07:18]

CLs for remote refs other than refs/pending/heads/master must contain NOTRY=true
and NOPRESUBMIT=true in order for the CQ to process them

[Bryan McQuade, 2016-07-16 17:08:31]

Description was changed from

==========
Add DocWrite.Block metric for NavigationToFirstContentfulPaint.

We have ParseStartToFirstContentfulPaint for DocWrite.Block, which is
useful for understanding the exact impact of the change on the period
from parse start to FCP, but it's also important to measure the overall
time from navigation to FCP. This change adds a metric to track this
overall time.

BUG=626945
TBR=shivanisha

Review-Url: https://codereview.chromium.org/2140443002
Cr-Commit-Position: refs/heads/master@{#404660}
(cherry picked from commit 10ff30f72b8ac4d842ea154f29420a946a463b66)
==========

to

==========
Add DocWrite.Block metric for NavigationToFirstContentfulPaint.

We have ParseStartToFirstContentfulPaint for DocWrite.Block, which is
useful for understanding the exact impact of the change on the period
from parse start to FCP, but it's also important to measure the overall
time from navigation to FCP. This change adds a metric to track this
overall time.

BUG=626945
TBR=shivanisha
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2140443002
Cr-Commit-Position: refs/heads/master@{#404660}
(cherry picked from commit 10ff30f72b8ac4d842ea154f29420a946a463b66)
==========

[Bryan McQuade, 2016-07-16 17:08:35]

The CQ bit was checked by bmcquade@chromium.org

[commit-bot: I haz the power, 2016-07-16 17:08:46]

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, 2016-07-16 17:10:31]

Committed patchset #1 (id:1)