libchrome: Add missing timer file to BUILD.gn BUG=b:169191023 TEST=emerge-amd64-generic libchrome Change-Id: I030300a09bb6eaafb77e4601625a6288b48b5992 Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/external/libchrome/+/2427012 Tested-by: Tom Hughes <tomhughes@chromium.org> Reviewed-by: Hidehiko Abe <hidehiko@chromium.org> Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org> Commit-Queue: Tom Hughes <tomhughes@chromium.org>
This directory includes the source from Chrome's libbase for use in Chrome OS.
See libchrome.md for more info.