[webapi] Integrate WebCL conformance tests from Khronos

Impacted TCs num(designed): New 133, Update 0, Delete 0
Unit test Platform: [Andriod]
Unit test result summary: Pass 0, Fail 0, Blocked 0
[embedding][XWALK-2763] Add test cases for EmbeddingApi

- Add 2 cases for XWalkView.getRemoteDebuggingUrl
- Add 1 case for XWalkResourceClient.onReceivedSslError
- Failure analysis: the remoteDebuggingUrl returned is null

Impacted tests(approved): new 3, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 2, fail 1, block 0
Merge pull request #1123 from zhuyongyong/embeddingAPI-tests/getRemoteDebuggingUrl

[embedding][XWALK-2763] Add test cases for EmbeddingApi
Merge pull request #1074 from JianfengXu/xujf/webcl/basic

[webapi] Integrate WebCL conformance tests from Khronos
Update atip to support modello UI automation
Merge pull request #1239 from yugang/yugang/modello-apis

Update atip to support modello UI automation
[webapi] Update open_app to app_launcher

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 74, fail 0, block 0
[stability] Update open_app to app_launcher

Impacted tests(approved): new 0, update 5, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 5, fail 0, block 0
[stability]Add new tcs

[Detailed commit message (if have)]
Impacted TCs num(approved):New 3,Update 0,Delete 0
UT result: Pass 3, Fail 0, Block 0
Merge pull request #1241 from yunxliu/yunxliu/webapi/modifyScript_case

[webapi] Update open_app to app_launcher
Merge pull request #1246 from linshen/shenlin/update-stability-1

[stability]Add new tcs
Merge pull request #1242 from yunxliu/yunxliu/stability/modifyScript_case

[stability] Update open_app to app_launcher
[atip]Modify commands used on IVI to be the latest
[wrt]modify open_app to app_launch

[Detailed commit message (if have)]
Impacted TCs num(approved):New 0,Update 18,Delete 0
UT result: Pass 10, Fail 5, Block 3
BUGID:https://crosswalk-project.org/jira/browse/XWALK-2773
Merge pull request #1247 from chenxix/tools/modify-command

[atip]Modify commands used on IVI to be the latest
Merge pull request #1248 from linshen/shenlin/rename_open_app1

[wrt]modify open_app to app_launch