The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a9439b9227e2eef4ce1bc3d3bcc810e5d4cc8ced

commit a9439b9227e2eef4ce1bc3d3bcc810e5d4cc8ced
Author: Oystein Eftevaag <oysteine@chromium.org>
Date: Mon Jan 08 23:00:22 2018

Add perfetto to //third_party

Bug:  793044 
Change-Id: Ieb1e6f0190446b3c10ffeb9b54b5f974b93af326
Reviewed-on: https://chromium-review.googlesource.com/809509
Reviewed-by: Grace Kloba <klobag@chromium.org>
Reviewed-by: Adam Michalik <xyzzyz@chromium.org>
Reviewed-by: Chris Palmer <palmer@chromium.org>
Commit-Queue: oysteine <oysteine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527799}
[modify] https://crrev.com/a9439b9227e2eef4ce1bc3d3bcc810e5d4cc8ced/BUILD.gn
[modify] https://crrev.com/a9439b9227e2eef4ce1bc3d3bcc810e5d4cc8ced/DEPS
[modify] https://crrev.com/a9439b9227e2eef4ce1bc3d3bcc810e5d4cc8ced/third_party/.gitignore
[modify] https://crrev.com/a9439b9227e2eef4ce1bc3d3bcc810e5d4cc8ced/third_party/protobuf/BUILD.gn