Use webrtc/base/logging.h for video coding/processing.

Replaces system_wrappers' logging.h in video_coding and
video_processing.

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

Review URL: https://codereview.webrtc.org/1435873003

Cr-Original-Commit-Position: refs/heads/master@{#10664}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 854e84c7fb61972bd8e39c1482e5f3e31f796b5f
16 files changed