[embedding][XWALK-1052] Leverage developer's sample tests for extension.

- Add extension support for embedding API.

Impacted tests(designed|approved): new 1, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 1, fail 0, block 0
[usecase-webapi] Fix the bug that the 'Pass' button is disabled when click the 'Cancle CSS FullScreen' button.

Impacted tests(approved): New 0, Update 1, Delete 0
Unit test platform: [TIZEN IVI]
Unit test result summary: Pass 1, Fail 0, Block 0
[embedding][XWALK-1052] Add one line to import Method class

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Android]
Unit test result summary: pass 72, fail 17, block 4
[webapi] Update the dir of 'How to build IAP extension'wiki

- Update the dir of 'How to build IAP extension'wiki
Merge pull request #727 from yunxliu/yunxliu/webapi/modify_iap

[webapi] Update the dir of 'How to build IAP extension'wiki
Merge pull request #720 from zhuyongyong/yongzhu/embeddingAPI/improve

[embedding][XWALK-1052] Add one line to import Method class
Merge pull request #691 from zhuyongyong/yongzhu/embeddingAPI-sample/add

[embedding][XWALK-1052] Leverage developer's sample tests for extension.
Merge pull request #687 from minxhuang/hm/misc/usecase-w3c/FullScreen

[usecase-webapi] Fix the bug that the 'Pass' button is disabled when click the 'Cancle CSS FullScreen' button.
[DeviceCapabilites] Fix wrong case.
Merge pull request #728 from legendlee1314/fixbug

[DeviceCapabilites] Fix wrong case.
[wrt] update seed file and get env sdb/ssh id

[Detailed commit message (if have)]
Impacted TCs num(approved): New: 311
Unit test platform: [tizen]
Unit test result summary: Pass 311 , Fail 0, Blocked 0
Merge pull request #731 from linshen/wrt/shen/wrt-manifest-tizen

[wrt] update seed file and get env sdb/ssh id
Fix tct-extra-html5-tests/interfaces

interfaces - FAIL
The basefont tag is obsolete http://www.w3.org/TR/html5/obsolete.html#obsolete and it's not supported in modern browsers.
Support for this tag has been removed in chromium at april 2013 http://code.google.com/p/chromium/issues/detail?id=231042
Remove the test

BUGS=XWALK-2213

Change-Id: I287414beaace54906ec5412d23f33d2c25b67c1a
Merge pull request #588 from tiwanek/XWALK-2213

Fix tct-extra-html5-tests/interfaces and tct-extra-html5-tests/month_9