[CSS Grid Layout] Handle alignment with orthogonal flows
Now that grid sizing and positioning issues wrt orthogonal flows have
been clarified in the last spec draft, we can adapt now our alignment
logic to work with orthogonal flows.
Even though basic alignment would work with orthogonal flows with
this patch, we still doesn't allow stretching in that case. I'll provide a
patch for that feature since it's a complex logic and better have an
isolated change.
BUG=556171, 445742, 376823, 249451
Review-Url: https://codereview.chromium.org/842193004
Cr-Commit-Position: refs/heads/master@{#406557}
8 files changed