Implement `direction` property (#906)
1<test name="gridflex_kitchen_sink_minimise3__content_box_ltr" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <div box-sizing="content-box" direction="ltr" width="50px">
5 <div display="grid" box-sizing="content-box" direction="ltr" grid-template-rows="30% 10%" grid-template-columns="auto 10%">
6 <div box-sizing="content-box" direction="ltr" width="20px" height="20px"/>
7 <div box-sizing="content-box" direction="ltr"/>
8 <div box-sizing="content-box" direction="ltr"/>
9 <div box-sizing="content-box" direction="ltr"/>
10 </div>
11 </div>
12 </input>
13 <expectations>
14 <node x="0" y="0" width="50" height="20">
15 <node x="0" y="0" width="20" height="20">
16 <node x="0" y="0" width="20" height="20"/>
17 <node x="20" y="0" width="2" height="6"/>
18 <node x="0" y="6" width="20" height="2"/>
19 <node x="20" y="6" width="2" height="2"/>
20 </node>
21 </node>
22 </expectations>
23</test>