Add separate trace events for recalcStyle and rebuildLayoutTree.

Add separate trace events for recalcStyle and rebuildLayoutTree.

When style recalc and layout tree building is fully separated, it will
be valuable to measure them separately as well.

R=nainar@chromium.org,esprehn@chromium.org
BUG=595137
Review-Url: https://codereview.chromium.org/2779573002
Cr-Commit-Position: refs/heads/master@{#460027}
Committed: https://chromium.googlesource.com/chromium/src/+/9c91326aed6eb90617cebd1180d26cd4c6a41d00

[rune, 2017-03-27 17:18:08]

The CQ bit was checked by rune@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-27 17:19:01]

Dry run: 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, 2017-03-27 18:46:43]

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

[commit-bot: I haz the power, 2017-03-27 18:46:44]

Dry run: This issue passed the CQ dry run.

[nainar, 2017-03-27 21:12:46]

lgtm

[esprehn, 2017-03-28 00:40:34]

lgtm

[rune, 2017-03-28 06:13:38]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2017-03-28 06:13:55]

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, 2017-03-28 06:19:27]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490681618298940, "parent_rev":
"05a0df9c9908ceabcf5febca6daecb87dd1ae5f0", "commit_rev":
"9c91326aed6eb90617cebd1180d26cd4c6a41d00"}

[commit-bot: I haz the power, 2017-03-28 06:20:35]

Description was changed from

==========
Add separate trace events for recalcStyle and rebuildLayoutTree.

When style recalc and layout tree building is fully separated, it will
be valuable to measure them separately as well.

R=nainar@chromium.org,esprehn@chromium.org
BUG=595137
==========

to

==========
Add separate trace events for recalcStyle and rebuildLayoutTree.

When style recalc and layout tree building is fully separated, it will
be valuable to measure them separately as well.

R=nainar@chromium.org,esprehn@chromium.org
BUG=595137

Review-Url: https://codereview.chromium.org/2779573002
Cr-Commit-Position: refs/heads/master@{#460027}
Committed:
https://chromium.googlesource.com/chromium/src/+/9c91326aed6eb90617cebd1180d2...
==========

[commit-bot: I haz the power, 2017-03-28 06:20:36]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/9c91326aed6eb90617cebd1180d2...