commit c88c6ad422ab8a5baf8e0018347ddc4e0bdfabe8
author Oriol Brufau <obrufau@igalia.com> Mon Mar 02 14:51:48 2020
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> Mon Mar 02 15:08:00 2020
tree 5bae633f416e74f4aa350c4d27c4a543d114e594
parent a6d22dfcf521a9c9f2c43cd1baac4c83924e899c

[css-grid] Fix referencing line both inside and after auto repeat()

When referencing a line name appearing both inside and after an auto
repeat(), the code used to just take the minim of:
 - The absolute index of the line inside the auto repeat(), i.e. the
   local index relative to the auto repeat() plus the insertion point of
   the auto repeat().
 - The index of the line outside the auto repeat(), without expanding
   repeated tracks.

This was correct if the line outside the auto repeat() preceded it.
Otherwise it was wrong due to not taking repeated tracks into account.

For example, with

  grid-template-columns: 1px repeat(auto-fill, 2px 3px [a]) [a];

the absolute index of the line inside the auto repeat() is 2 + 1 = 3.
And the absolute index of the line outside the auto repeat() is 1 + 2*n.
However, the used index wasn't including repeated tracks so it was 2.

Therefore, the minimum was 2 but should have been 3.

BUG=966090

TEST=external/wpt/css/css-grid/placement/grid-placement-using-named-grid-lines-003.html

Change-Id: I1777a64d7e7d39350a327185dcd13f82493adfdb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2071019
Commit-Queue: Oriol Brufau <obrufau@igalia.com>
Reviewed-by: Javier Fernandez <jfernandez@igalia.com>
Cr-Commit-Position: refs/heads/master@{#745925}