[css-flexbox] logical widths are always definite.

[css-flexbox] logical widths are always definite.

Per guidance from the CSS working group we should always treat widths
as definite, which allows us to simplify & speed up some code in
Flexbox.

See also https://lists.w3.org/Archives/Public/www-style/2016May/0135.html
which I believe covers all the cases where they might not be (=shrinkwrapping).

Because this means that for widths we always use the actual width of the
element for percentage calculations, we can remove some code from LayoutBox too.

BUG=595361
Review-Url: https://codereview.chromium.org/2022553002
Cr-Commit-Position: refs/heads/master@{#396584}
(cherry picked from commit 237e6796e049700ccb7adf105d3f95ba9572e66c)

Committed: https://chromium.googlesource.com/chromium/src/+/41265a04a2f3c3db5988012aae575b3667639674

[cbiesinger, 2016-06-07 17:58:47]

Description was changed from

==========
[css-flexbox] logical widths are always definite.

Per guidance from the CSS working group we should always treat widths
as definite, which allows us to simplify & speed up some code in
Flexbox.

See also https://lists.w3.org/Archives/Public/www-style/2016May/0135.html
which I believe covers all the cases where they might not be (=shrinkwrapping).

Because this means that for widths we always use the actual width of the
element for percentage calculations, we can remove some code from LayoutBox too.

BUG=595361

Review-Url: https://codereview.chromium.org/2022553002
Cr-Commit-Position: refs/heads/master@{#396584}
(cherry picked from commit 237e6796e049700ccb7adf105d3f95ba9572e66c)
==========

to

==========
[css-flexbox] logical widths are always definite.

Per guidance from the CSS working group we should always treat widths
as definite, which allows us to simplify & speed up some code in
Flexbox.

See also https://lists.w3.org/Archives/Public/www-style/2016May/0135.html
which I believe covers all the cases where they might not be (=shrinkwrapping).

Because this means that for widths we always use the actual width of the
element for percentage calculations, we can remove some code from LayoutBox too.

BUG=595361

Review-Url: https://codereview.chromium.org/2022553002
Cr-Commit-Position: refs/heads/master@{#396584}
(cherry picked from commit 237e6796e049700ccb7adf105d3f95ba9572e66c)

Committed:
https://chromium.googlesource.com/chromium/src/+/41265a04a2f3c3db5988012aae57...
==========

[cbiesinger, 2016-06-07 17:58:49]

Committed patchset #1 (id:1) manually as
41265a04a2f3c3db5988012aae575b3667639674.