Removed bjornv from OWNERS and added two new owners
Removed bjornv from OWNERS and added two new owners

BUG=

Review URL: https://codereview.webrtc.org/1272603002

Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#9685}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 8381b37488c7b47f77260dd48e988d51478b7039

jchavanton/webrtc,aleonliao/webrtc-trunk,sippet/webrtc,aleonliao/webrtc-trunk,Alkalyne/webrtctrunk,jchavanton/webrtc,aleonliao/webrtc-trunk,sippet/webrtc,sippet/webrtc,aleonliao/webrtc-trunk,jchavanton/webrtc,aleonliao/webrtc-trunk,jchavanton/webrtc,Alkalyne/webrtctrunk,sippet/webrtc,Alkalyne/webrtctrunk,aleonliao/webrtc-trunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,sippet/webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,sippet/webrtc,Alkalyne/webrtctrunk,jchavanton/webrtc,jchavanton/webrtc