[wrt-usecase][xwalk-2633] Add one usecase for wrt

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
Merge pull request #1021 from wanghongjuan/wanghongjuan/usecase/xwalk-2633

[wrt-usecase][xwalk-2633] Add one usecase for wrt