[usecase] Update usecase for SpeechSynthesis

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 1, fail 0, block 0
[webapi] Fix 2 tests for Audio & Video

Impacted tests(approved): new 0, update 2, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 2, fail 0, block 0
[wrt][webqa-164] Update test script entry
Merge pull request #1415 from haoxli/wrt/webqa-164

[wrt][webqa-164] Update test script entry
Merge pull request #1411 from kangxu/kangxu/usecase/SpeechSynthesis/update

[usecase] Update usecase for SpeechSynthesis
Merge pull request #1414 from yunxiaoxie/canPlayType-null2

[webapi] Fix 2 tests for Audio & Video
[webapi][XWALK-3095] Update xml file to fix XWALK-3095
Sync to latest the XSLT style for test case and test result

https://github.com/testkit/testkit-lite/tree/master/xsd
(commit 1d845ee6ecc08204121cdf81c5a57758ebe13929)

Format tests.xml and result.xml by `xmllint --format`
- http://xmlsoft.org/xmllint.html

Format tests.css
- http://google-styleguide.googlecode.com/svn/trunk/htmlcssguide.xml
- Indent by 2 spaces at a time
- Separate selectors and declarations by new lines

Format application.js
- http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml
- Indent by 2 spaces at a time
- Remove trailing white spaces
Merge pull request #1424 from zqzhang/xsd-update

Sync to latest the XSLT style for test case and test result
[tools] Deprecate WRTLauncher

This tool is only referenced by xml/csv2xml.py which
shall be updated.
Merge pull request #1426 from zqzhang/wrtlauncher

[tools] Deprecate WRTLauncher
Merge pull request #1418 from JianfengXu/simd/3095

[webapi][XWALK-3095] Update xml file to fix XWALK-3095