[css-flexbox] freezeInflexibleItems has to skip out-of-flow boxes

[css-flexbox] freezeInflexibleItems has to skip out-of-flow boxes

Out-of-flow items should not be frozen. This would have problematic
effects when they have flex-grow/flex-shrink set because freezing
them would subtract them from our flex-grow/shrink total without
having been added.

This also adds some DCHECKs.

R=eae@chromium.org,dgrogan@chromium.org
BUG=628072
Review-Url: https://codereview.chromium.org/2146603007
Cr-Commit-Position: refs/heads/master@{#405608}
(cherry picked from commit fa759873d12635a75bdbdc3d6d5967a13378f5a3)

Committed: https://chromium.googlesource.com/chromium/src/+/8986d5f563027594f0f0ee7698bcb69915accd7a

[cbiesinger, 2016-07-15 19:54:19]

Description was changed from

==========
[css-flexbox] freezeInflexibleItems has to skip out-of-flow boxes

Out-of-flow items should not be frozen. This would have problematic
effects when they have flex-grow/flex-shrink set because freezing
them would subtract them from our flex-grow/shrink total without
having been added.

This also adds some DCHECKs.

R=eae@chromium.org,dgrogan@chromium.org
BUG=628072

Review-Url: https://codereview.chromium.org/2146603007
Cr-Commit-Position: refs/heads/master@{#405608}
(cherry picked from commit fa759873d12635a75bdbdc3d6d5967a13378f5a3)
==========

to

==========
[css-flexbox] freezeInflexibleItems has to skip out-of-flow boxes

Out-of-flow items should not be frozen. This would have problematic
effects when they have flex-grow/flex-shrink set because freezing
them would subtract them from our flex-grow/shrink total without
having been added.

This also adds some DCHECKs.

R=eae@chromium.org,dgrogan@chromium.org
BUG=628072

Review-Url: https://codereview.chromium.org/2146603007
Cr-Commit-Position: refs/heads/master@{#405608}
(cherry picked from commit fa759873d12635a75bdbdc3d6d5967a13378f5a3)

Committed:
https://chromium.googlesource.com/chromium/src/+/8986d5f563027594f0f0ee7698bc...
==========

[cbiesinger, 2016-07-15 19:54:20]

Committed patchset #1 (id:1) manually as
8986d5f563027594f0f0ee7698bcb69915accd7a.