Fix fuzzer breakage in Chromium.

Removes log disabling under Chromium which doesn't compile due to
missing LS_INFO in the override log implementation.

Also removes dependency on webrtc/test/BUILD.gn which doesn't build in
Chromium (due to third_party/gflags not being present). Instead the
no-op implementation of field_trials in system_wrappers is used.

BUG=chromium:561667, webrtc:4771
R=kjellander@webrtc.org
TBR=henrikg@webrtc.org

Review URL: https://codereview.webrtc.org/1473713004 .

Cr-Original-Commit-Position: refs/heads/master@{#10793}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 89d658f6b4d5efabf35b50cb050f13e37cfb0cfd
2 files changed