Add lifecycle update microbenchmarks

Add lifecycle update microbenchmarks

This patch adds 3 lifecycle update microbenchmarks which will be used as
a first pass optimization of the new paint invalidation and paint property
tree update steps. Benchmarks will still be needed on real-world content.

The three tests included affect transform, background-color, and paint
offset changes.

BUG=645667
Committed: https://crrev.com/e500e8ba8aac6f63a94ba7a411b536f513d2270d
Cr-Commit-Position: refs/heads/master@{#430963}

[pdr., 2016-11-09 06:25:31]

pdr@chromium.org changed reviewers:
+ wangxianzhu@chromium.org

[Xianzhu, 2016-11-09 16:47:31]

The CQ bit was checked by wangxianzhu@chromium.org

[Xianzhu, 2016-11-09 16:47:32]

lgtm

[commit-bot: I haz the power, 2016-11-09 16:48:03]

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, 2016-11-09 17:44:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-09 18:02:47]

Description was changed from

==========
Add lifecycle update microbenchmarks

This patch adds 3 lifecycle update microbenchmarks which will be used as
a first pass optimization of the new paint invalidation and paint property
tree update steps. Benchmarks will still be needed on real-world content.

The three tests included affect transform, background-color, and paint
offset changes.

BUG=645667
==========

to

==========
Add lifecycle update microbenchmarks

This patch adds 3 lifecycle update microbenchmarks which will be used as
a first pass optimization of the new paint invalidation and paint property
tree update steps. Benchmarks will still be needed on real-world content.

The three tests included affect transform, background-color, and paint
offset changes.

BUG=645667

Committed: https://crrev.com/e500e8ba8aac6f63a94ba7a411b536f513d2270d
Cr-Commit-Position: refs/heads/master@{#430963}
==========

[commit-bot: I haz the power, 2016-11-09 18:02:48]

Patchset 1 (id:??) landed as
https://crrev.com/e500e8ba8aac6f63a94ba7a411b536f513d2270d
Cr-Commit-Position: refs/heads/master@{#430963}