Re-land 8809 "Set WebRtcVideoEngine2 as the WebRtcMe..."

I've kicked of a roll into Chromium with out the WebRtcVideoEngine2 change, to see if it was causing the roll problems, but re-landing in the meantime.

> Revert 8809 "Set WebRtcVideoEngine2 as the WebRtcMediaEngine."
> content_browsertests started failing around the time the change landed and rolls are failing now.
> I'm going to try rolling this back, start a roll, and then re-land.
> 
> > 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
> 
> TBR=pbos@webrtc.org
> 
> Review URL: https://webrtc-codereview.appspot.com/43889004

TBR=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/50459004

Cr-Commit-Position: refs/heads/master@{#8817}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8817 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/media/webrtc/webrtcmediaengine.cc b/talk/media/webrtc/webrtcmediaengine.cc
index 71a77ac..438728d 100644
--- a/talk/media/webrtc/webrtcmediaengine.cc
+++ b/talk/media/webrtc/webrtcmediaengine.cc
@@ -70,12 +70,8 @@
     webrtc::AudioDeviceModule* adm_sc,
     cricket::WebRtcVideoEncoderFactory* encoder_factory,
     cricket::WebRtcVideoDecoderFactory* decoder_factory) {
-  if (webrtc::field_trial::FindFullName("WebRTC-NewVideoAPI") == "Enabled") {
-    return new cricket::WebRtcMediaEngine2(adm, adm_sc, encoder_factory,
-                                           decoder_factory);
-  }
-  return new cricket::WebRtcMediaEngine(adm, adm_sc, encoder_factory,
-                                        decoder_factory);
+  return new cricket::WebRtcMediaEngine2(adm, adm_sc, encoder_factory,
+                                         decoder_factory);
 }
 
 WRME_EXPORT