apply better operation with skip frames and remove a return which may cause missing deleting inputimage
Reformat
Add pref to turn H.264 on and off
Merge branch 'openh264_integration' of https://github.com/ekr/gecko-dev into openh264_integration

Conflicts:
	media/webrtc/signaling/src/media-conduit/WebrtcOpenH264VideoCodec.cpp