Revert of [css-align] Don't resolve 'auto' values for computed style.…

… (patchset #12 id:210001 of https://codereview.chromium.org/2455093002/ )

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] w3c/csswg-drafts#440
>
> BUG=725489
>
> Review-Url: https://codereview.chromium.org/2455093002
> Cr-Commit-Position: refs/heads/master@{#475400}
> Committed: https://chromium.googlesource.com/chromium/src/+/5389373c6dec30d783eb46b4c8190720f411a8a7

TBR=cbiesinger@chromium.org,cbiesinger@google.com,meade@chromium.org,rego@igalia.com,svillar@igalia.com,jfernandez@igalia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=725489

Review-Url: https://codereview.chromium.org/2913093002
Cr-Commit-Position: refs/heads/master@{#475689}

css/css-align-3/default-alignment/place-items-shorthand-006.html

@@ -10,7 +10,7 @@
 <script>
     var values = ["normal", "stretch"].concat(selfPositionValues, baselineValues);
     values.forEach(function(alignValue) {
-        [""].concat(values).forEach(function(justifyValue) {
+        ["", "auto"].concat(values).forEach(function(justifyValue) {
             var value = (alignValue + " " + justifyValue).trim();
             test(function() {
                 checkPlaceShorhand("place-items", alignValue, justifyValue)