Add StyledMarkupSerializerTest.AcrossShadow

Add StyledMarkupSerializerTest.AcrossShadow

This CL adds an unit layout test selection-across-shadow, which tests that
the selection should be serialized across a shadow boundary as if there
is no shadow boundary.

BUG=275851
TEST=webkit_unit_tests --gtest_filter=StyledMarkupSerializerTest.*

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197872

[hajimehoshi, 2015-06-24 09:34:37]

hajimehoshi@chromium.org changed reviewers:
+ yosin@chromium.org

[hajimehoshi, 2015-06-24 09:34:37]

PTAL

[hajimehoshi, 2015-06-24 10:17:09]

It seems better for us to wait until crrev.com/1204853003 is landed.

[yosin_UTC9, 2015-06-25 03:49:48]

On 2015/06/24 10:17:09, hajimehoshi wrote:
> It seems better for us to wait until crrev.com/1204853003 is landed.

We're ready to go! (^_^)Σ

[hajimehoshi, 2015-06-25 04:05:54]

Rebased. PTAL

[yosin_UTC9, 2015-06-25 05:55:24]

lgtm

[yosin_UTC9, 2015-06-25 05:55:27]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2015-06-25 09:01:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1204843003/40001

[commit-bot: I haz the power, 2015-06-25 12:21:19]

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

[commit-bot: I haz the power, 2015-06-25 12:21:19]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/68258)

[yosin_UTC9, 2015-06-26 00:56:17]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2015-06-26 00:56:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1204843003/40001

[commit-bot: I haz the power, 2015-06-26 01:51:03]

Committed patchset #3 (id:40001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197872