Revert of [css-align] Don't resolve 'auto' values for computed style. (patchset #12 id:210001 of )

Reason for revert:
This patch breaks DevTools toolbars (Console gear icon, checkbox labels are centered), it also seems to break the Welcome to Chrome page layout.

Original issue's description:
> [css-align] Don't resolve 'auto' values for computed style.
> The CSS Box Alignment specification has been changed recently so that
> now all the propeties have the specificed value as computed value. The
> rationale of this change are at the associated W3C github issue [1].
> This change implies that we don't need to execute the StyleAdjuter
> logic we implemented specifically for supporting 'auto' values
> resolution for computed style. We can live now with resolution at
> layout time only.
> [1]
> BUG=725489
> Review-Url:
> Cr-Commit-Position: refs/heads/master@{#475400}
> Committed:,,,,,
# Skipping CQ checks because original CL landed less than 1 days ago.

Cr-Commit-Position: refs/heads/master@{#475689}
29 files changed