Similar to the existing constants for the media constraint-keys intended for media sources, add the constants for the standard keys to generate offers and answers. This patch also adds a few comments to RTCMediaConstraints.h, to give a better clue on the intended usage scope of declared media-constraint keys and values. BUG=webrtc:7722 Review-Url: https://codereview.webrtc.org/2908013002 Cr-Commit-Position: refs/heads/master@{#18362}
Name: WebRTC URL: http://www.webrtc.org Version: 90 License: BSD License File: LICENSE Description: WebRTC provides real time voice and video processing functionality to enable the implementation of PeerConnection/MediaStream. Third party code used in this project is described in the file LICENSE_THIRD_PARTY.