There were a couple of GN and GYP references that were incorrect in Chromium builds: - GN references between WebRTC targets must be using relative paths, not absolute. - GYP references between WebRTC targets must be using the <(webrtc_root)v variable in order to be expanded to the correct path in a Chromium build. NOTRY=True TBR=hjon@webrtc.org, hbos@webrtc.org Review URL: https://codereview.webrtc.org/1681493002 Cr-Commit-Position: refs/heads/master@{#11521}