[webapi][xwalk-2309] Use launch instead of AppControl to throw WebAPIException

- AppControl is not supported in Crosswalk at now. Use launch() instead to throw WebAPIException.
- Fail Reason: Const attributes are not implemented(XWALK-2309); Wrong exception thrown(XWALK-1659); Error message is a empty string, no message info.

Impacted tests(approved): new 0, update 35, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 6, fail 29, block 0