Implement `direction` property (#906)
1<test name="percent_within_flex_grow__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="350px" height="100px">
5 <div box-sizing="content-box" direction="ltr" width="100px"/>
6 <div box-sizing="content-box" direction="ltr" flex-direction="column" flex-grow="1">
7 <div box-sizing="content-box" direction="ltr" width="100%"/>
8 </div>
9 <div box-sizing="content-box" direction="ltr" width="100px"/>
10 </div>
11 </input>
12 <expectations>
13 <node x="0" y="0" width="350" height="100">
14 <node x="0" y="0" width="100" height="100"/>
15 <node x="100" y="0" width="150" height="100">
16 <node x="0" y="0" width="150" height="0"/>
17 </node>
18 <node x="250" y="0" width="100" height="100"/>
19 </node>
20 </expectations>
21</test>