Implement `direction` property (#906)
1<test name="flex_shrink_to_zero__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="75px">
5 <div box-sizing="content-box" direction="ltr" flex-shrink="0" width="50px" height="50px"/>
6 <div box-sizing="content-box" direction="ltr" width="50px" height="50px"/>
7 <div box-sizing="content-box" direction="ltr" flex-shrink="0" width="50px" height="50px"/>
8 </div>
9 </input>
10 <expectations>
11 <node x="0" y="0" width="75" height="50">
12 <node x="0" y="0" width="50" height="50"/>
13 <node x="50" y="0" width="0" height="50"/>
14 <node x="50" y="0" width="50" height="50"/>
15 </node>
16 </expectations>
17</test>