Implement `direction` property (#906)
1<test name="block_scrollbar_rtl__content_box_ltr" use-rounding="true">
2 <viewport width="max-content" height="max-content"/>
3 <input>
4 <div display="block" box-sizing="content-box" direction="rtl" overflow-y="scroll" scrollbar-width="15" width="100px" height="100px">
5 <div box-sizing="content-box" direction="ltr" height="200px"/>
6 </div>
7 </input>
8 <expectations>
9 <node x="0" y="0" width="100" height="100" scroll_width="0" scroll_height="100">
10 <node x="15" y="0" width="85" height="200"/>
11 </node>
12 </expectations>
13</test>