[webapi] Integrate 6 tests for CSS3 Text

 - These tests come from http://svn.webkit.org/repository/webkit/trunk/LayoutTests/fast/text/

Impacted tests(approved): new 6, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 6, fail 0, block 0
[webapi][XWALK-2974,2975] Fix entry issue for Web RTC
[misc-abat] Rename web-abat-tests to web-abat-xwalk-tests
Merge pull request #1312 from Honry/rename-abat

[misc-abat] Rename web-abat-tests to web-abat-xwalk-tests
Merge pull request #1334 from kangxu/kangxu/webapi/webapi-webrtc-w3c-tests/fixIssue

[webapi][XWALK-2974,2975] Fix entry issue for Web RTC
Merge pull request #1327 from yunxiaoxie/move-up-text

[webapi] Integrate 6 tests for CSS3 Text