[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