tree d62fb5000f71f02262c983b8786b3cad7f448c34
parent dcd874cd2e10d576c39160a63c1176a77ea07e3b
author Takuto Ikuta <tikuta@google.com> 1648202905 +0900
committer Commit Bot <commit-bot@chromium.org> 1648237491 +0000

use unique_ptr for TraceItem

Also this guards event_ access by mutex.

Change-Id: I71a67546c8b3474775e3eac4b33a6e0f188791c7
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/13320
Reviewed-by: Brett Wilson <brettw@chromium.org>
Commit-Queue: Brett Wilson <brettw@chromium.org>