Occurrences of WEBRTC_TRACE(...) will in the future be replaced with the preferred logging mechanism LOG(...). That will be done with a script that runs 'git cl format' on diffs, which will break formatting of surrounding code if the file is not already formatted. Hence this CL.
BUG=webrtc:5118
Review-Url: https://codereview.webrtc.org/2953793002
Cr-Commit-Position: refs/heads/master@{#18766}