[webapi] Integrate 27 tests for HTML5 iframe.sandbox

- approved: 26
- One case have been removed ever.

Impacted tests(approved): new 26, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 26, fail 0, block 0
Merge pull request #1188 from xinliux/sandbox-integrate

[webapi] Integrate 27 tests for HTML5 iframe.sandbox