Use webrtc/base/logging.h in stefan@'s ownership.

Replaces system_wrappers' logging in call/, bitrate_controller/, pacing/
and remote_bitrate_estimator/.

BUG=webrtc:5118
R=stefan@webrtc.org

Review URL: https://codereview.webrtc.org/1484503002 .

Cr-Original-Commit-Position: refs/heads/master@{#10896}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 7c704b82893bbe7fc206b004fb9dfe6e69a986ef
9 files changed