GitLab

Base code should include base_tracing.h instead of trace_event impl
headers, so that base can build with enable_base_tracing = false.

Previously, a presubmit check emitted a warning if a trace_event
implementation header was included outside trace_event implementation
directories. This modifies the warning into an error, which can be
bypassed via a source code comment.

TBR: rsesek@chromium.org
Bug: 1093406
Change-Id: Ic82f399390ededd12c04ad6005de8f68929bae87
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2264555Reviewed-by: Eric Seckler <eseckler@chromium.org>
Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Commit-Queue: Eric Seckler <eseckler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782901}