Add base/files/file_tracing.cc to tools/gn/bootstrap/bootstrap.py.

BUG=491951

Review URL: https://codereview.chromium.org/1144003003

Cr-Original-Commit-Position: refs/heads/master@{#331315}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 58a1b336e86f925eac8054e6d73f12bc026bbe60
1 file changed
tree: 1b78fd2d0c8d28cd70cd9eaf6de55eaf9ac2a655
  1. tools/