Update trace() to handle objects (#819)
Update trace() to handle objects (#819)

* Added link to codelab

* Tweak

* Fixed JavaScript code indent for index.html

* Added captureStream video-video and video-pc demos

* Updated index.html

* Removed redundant files

* Fixed lint error

* Fixed URLs in index.html

* Added Firefox mozCaptureStream

* Added videos

* Added onplay

* Corrected Chrome version info

* Updated Firefox version

* Tweaks from review

* Changed trace call to console.log

* Updated trace() to handle objects as well as strings and numbers

fippo/webrtc,mauricionr/samples,fippo/webrtc,webrtc/samples,mauricionr/samples,mauricionr/samples,webrtc/samples,taylor-b/samples,taylor-b/samples