[webapi][XWALK-2572] Fix bug for mediaserver

- Fix bug for mediaserver
- Failure analysis: https://crosswalk-project.org/jira/browse/XWALK-1699

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
[webapi] Add developer guide for SIMD
[embedding][XWALK-2374] Add new cases for onCreateWindowRequested, onIconAvailable and onReceivedIcon

- Failure analysis: The onCreateWindowRequested method could not be triggered when new window was opened.

Impacted tests(approved): new 8, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 2, fail 6, block 0
[usecase-embedding][XWALK-2373] Add usecase for onIconAvailable, onReceivedIcon and onCreateWindowRequested

- Failure analysis:The onCreateWindowRequested method could not be triggered when new window was opened.

Impacted tests(approved): new 2, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 1, fail 1, block 0
[doc][embeddingapi] Add embedding User and Developer Guide

- Add Embedding_Testing_Suite_User_Guide.md
- Add Embedding_Test_Suite_Developer_Guide.md
- Add Embedding_Test_Suite_Packaging_Guide.md
[wrt-usecase] Remove 17 duplicated relevant TCs
Merge pull request #1044 from wanghongjuan/wanghongjuan/usecase/remove-case

[wrt-usecase] Remove 17 duplicated relevant TCs
[webapi][XWALK-2593] Fix bug for webrtc

- Fix bug for webrtc
- Failure analysis: https://crosswalk-project.org/jira/browse/XWALK-2593

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
[wrt]update 2 tcs to designed

[Detailed commit message (if have)]
Impacted TCs num(designed): New 0, update 0, deleted 2
Unit test platform: [tizen]
update tests.xml to delete 2 tcs ,no need UT.
Merge pull request #1046 from linshen/shenlin/update-tct-pm-wrt-to-designed

[wrt]update 2 tcs to designed
[usecase][XWALK-443] Update package wgt path to resolve

- Floder tests change to samples, so tizen.filesystem.resolve path need to update

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.106
Unit test result summary: pass 0, fail 1, block 0
[webapi-usecase] Remove 11 tests from usecase

- Remove 11 test cases from usecase, because of merge to demo express
Merge pull request #1048 from xinliux/xinliux/usecase/XWALk-443

[usecase][XWALK-443] Update package wgt path to resolve
[wrt][XWALK-1670]Add WebRTC testcase
[Detailed commit message (if have)]
Impacted TCs num(designed): New 10, update 0, deleted 0
Unit test platform: [tizen]
Merge pull request #1042 from linshen/shenlin/update/XWALK-1670-WebRTC

[wrt][XWALK-1670]Add WebRTC testcase
[cordova|misc|webapi|wrt] Remove launcher attribute in tests.xml
[webapi|wrt] Change set type in tests.xml

- Change type to qunit for SIMD
- Change type to wrt to wgt tests
[wrt]update multiuser tcs

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 9, deleted 1
Unit test platform: [tizen]
UT result: Pass 9, Fail 0,Block 0
Merge pull request #1053 from haoxli/haoxli/webapi/update-set-type

[webapi/wrt] Change set type in tests.xml
Merge pull request #1052 from haoxli/haoxli/remove-launcher

[cordova|misc|webapi|wrt] Remove launcher attribute in tests.xml