The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4e82758c2d8945d7c4e3ef741f2eacb3ea80684d

commit 4e82758c2d8945d7c4e3ef741f2eacb3ea80684d
Author: Rune Lillesveen <futhark@chromium.org>
Date: Fri Dec 15 13:47:53 2017

display:contents tests for button/details/fieldset.

Bug:  794498 ,  795217 ,  795219 
Change-Id: I48011892452379f432119b5a8bb3bc4a4c48ee06
Reviewed-on: https://chromium-review.googlesource.com/828974
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524371}
[modify] https://crrev.com/4e82758c2d8945d7c4e3ef741f2eacb3ea80684d/third_party/WebKit/LayoutTests/TestExpectations
[add] https://crrev.com/4e82758c2d8945d7c4e3ef741f2eacb3ea80684d/third_party/WebKit/LayoutTests/external/wpt/css/css-display/display-contents-button.html
[add] https://crrev.com/4e82758c2d8945d7c4e3ef741f2eacb3ea80684d/third_party/WebKit/LayoutTests/external/wpt/css/css-display/display-contents-details.html
[add] https://crrev.com/4e82758c2d8945d7c4e3ef741f2eacb3ea80684d/third_party/WebKit/LayoutTests/external/wpt/css/css-display/display-contents-fieldset.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/34f26f3449a4cf754afd750db3cacc48c03a3dcd

commit 34f26f3449a4cf754afd750db3cacc48c03a3dcd
Author: Rune Lillesveen <futhark@chromium.org>
Date: Tue Dec 19 10:50:03 2017

Don't force block for display:contents legend.

A legend with display:contents is not a rendered legend. See:

https://html.spec.whatwg.org/multipage/rendering.html#rendered-legend

This fixes a wpt test for display:contents.

Bug:  795219 
Change-Id: Ib23e7da0491e36c3f4880eaac3c9d704a6730cc3
Reviewed-on: https://chromium-review.googlesource.com/832458
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524993}
[modify] https://crrev.com/34f26f3449a4cf754afd750db3cacc48c03a3dcd/third_party/WebKit/LayoutTests/TestExpectations
[modify] https://crrev.com/34f26f3449a4cf754afd750db3cacc48c03a3dcd/third_party/WebKit/Source/core/css/resolver/StyleAdjuster.cpp