[misc][XWALK-990] Add usecase for application

- Fail Reason: Get current application information and context failed.

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: [Tizen IVI]
test result summary: Pass 0, Fail 1, Blocked 0
Merge pull request #351 from JianfengXu/xujf/misc/app

[misc][XWALK-990] Add usecase for application