[webapi] Update 16 TCs and delete 4 TCs for webrtc
[misc-sanity] Update the Hrtime for video play
Add 3 TCs to webapi-dlna-xwalk-tests
Merge pull request #41 from jieqiongxcui/cjq/misc/sanity/Hrtime

[misc-sanity] Update the Hrtime for video play
Merge pull request #50 from wanghongjuan/whj/webapi/dlna-add

[webapi] Add 3 TCs to webapi-dlna-xwalk-tests
Merge pull request #37 from yunxliu/yunxliu/webapi/webrtc

[webapi] Update 15 TCs and delete 4 TCs for webrtc
[misc-sanity] Use ogv/ogg instead of mp4/mp3
Merge pull request #51 from haoxli/haoxli/misc-sanity/res/media

[misc-sanity] Use ogv/ogg instead of mp4/mp3