Set WebRtcVideoEngine2 as the WebRtcMediaEngine.

Removes the experiment launching WebRTC-NewVideoAPI. This field trial
has shown no major regressions on Chrome Canary/Dev that haven't been
addressed, so enabling it in time before feature freeze.

BUG=1788
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/44759004

Cr-Commit-Position: refs/heads/master@{#8809}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8809 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed