Implement `direction` property (#906)
1<test name="align_baseline_column__content_box_ltr" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <div box-sizing="content-box" direction="ltr" flex-direction="column" align-items="baseline" width="100px" height="100px">
5 <div box-sizing="content-box" direction="ltr" width="50px" height="50px"/>
6 <div box-sizing="content-box" direction="ltr" width="50px" height="20px"/>
7 </div>
8 </input>
9 <expectations>
10 <node x="0" y="0" width="100" height="100">
11 <node x="0" y="0" width="50" height="50"/>
12 <node x="0" y="50" width="50" height="20"/>
13 </node>
14 </expectations>
15</test>