| Changing a collapsed border's width should change the width of the table and the width of a shrink-to-fit containing block. | |
| There should be a square with a 4px inner blue border and a 1px outer black border. | |
| Firefox 50.0a1 (nightly 2016-07-07) fails this, so it should probably be upstreamed, except it uses chrome-specific `runAfterLayoutAndPaint`. | |
| The table cell has rowspan=2 because we almost didn't cover the case where a cell's rowspan exceeded the declared rows. | |
| PASS |