[misc-usecase][XWALK-1066] Add a Tc for messageport

- Add a messageport TC for send message
- Failure analysis: https://crosswalk-project.org/jira/browse/XWALK-1756
                      https://crosswalk-project.org/jira/browse/XWALK-1885

Impacted tests(approved): new 1, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
Merge pull request #306 from yunxliu/yunxliu/misc/messageport

[misc-usecase][XWALK-1066] Add a Tc for messageport