Implement `direction` property (#906)
1<test name="grid_taffy_issue_624__content_box_ltr" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <div display="grid" box-sizing="content-box" direction="ltr" justify-items="start" justify-content="start" width="320px" height="640px" grid-template-rows="auto auto auto 1fr" grid-template-columns="auto auto 1fr">
5 <div box-sizing="content-box" direction="ltr" width="100px" height="50px" grid-row-start="1" grid-row-end="span 2" grid-column-start="1"/>
6 <div box-sizing="content-box" direction="ltr" width="40px" height="30px" grid-row-start="1" grid-row-end="span 2" grid-column-start="2" grid-column-end="span 2"/>
7 <div box-sizing="content-box" direction="ltr" width="120px" height="20px" grid-row-start="3" grid-row-end="span 1" grid-column-start="1" grid-column-end="span 2"/>
8 </div>
9 </input>
10 <expectations>
11 <node x="0" y="0" width="320" height="640">
12 <node x="0" y="0" width="100" height="50"/>
13 <node x="100" y="0" width="40" height="30"/>
14 <node x="0" y="50" width="120" height="20"/>
15 </node>
16 </expectations>
17</test>