Avoid double layout for writing mode roots if LayoutNG is enabled

Avoid double layout for writing mode roots if LayoutNG is enabled

In legacy code we perform a series of subtree layouts that can be
avoided in LayoutNG code.

This patch disables layoutOrthogonalWritingModeRoots if layoutNG is
enabled.

BUG=635619
Review-Url: https://codereview.chromium.org/2666663002
Cr-Commit-Position: refs/heads/master@{#447083}
Committed: https://chromium.googlesource.com/chromium/src/+/8772b878183be72d544d3f9d0267b9255e1f1f98

[Gleb Lanbin, 2017-01-30 19:30:10]

glebl@chromium.org changed reviewers:
+ kojii@chromium.org

[kojii, 2017-01-30 19:42:13]

kojii@chromium.org changed reviewers:
+ eae@chromium.org

[kojii, 2017-01-30 19:42:13]

non-owner lgtm, thank you.

+eae

[eae, 2017-01-30 19:45:45]

LGTM

[eae, 2017-01-30 19:47:16]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2017-01-30 19:47:47]

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, 2017-01-30 22:04:42]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485805636962360, "parent_rev":
"eaa2722c0be4b60aa9ec141b5bde89f33a7d310d", "commit_rev":
"8772b878183be72d544d3f9d0267b9255e1f1f98"}

[commit-bot: I haz the power, 2017-01-30 22:05:17]

Description was changed from

==========
Avoid double layout for writing mode roots if LayoutNG is enabled

In legacy code we perform a series of subtree layouts that can be
avoided in LayoutNG code.

This patch disables layoutOrthogonalWritingModeRoots if layoutNG is
enabled.

BUG=635619
==========

to

==========
Avoid double layout for writing mode roots if LayoutNG is enabled

In legacy code we perform a series of subtree layouts that can be
avoided in LayoutNG code.

This patch disables layoutOrthogonalWritingModeRoots if layoutNG is
enabled.

BUG=635619

Review-Url: https://codereview.chromium.org/2666663002
Cr-Commit-Position: refs/heads/master@{#447083}
Committed:
https://chromium.googlesource.com/chromium/src/+/8772b878183be72d544d3f9d0267...
==========

[commit-bot: I haz the power, 2017-01-30 22:05:19]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8772b878183be72d544d3f9d0267...