GN: Fix bootstrap.py

//base/thread_task_runner_handle.cc was moved into //base/threading/.

Also for the build to succeed it now needs //base/files/important_file_writer.cc as well.

R=brettw@chromium.org

Review-Url: https://codereview.chromium.org/1972093002
Cr-Original-Commit-Position: refs/heads/master@{#394528}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f80bd170f853b83631da9a17803bd919a7b17204
1 file changed
tree: 644a2bfb977c7ba18dc48ba6c6defcbb8da6948d
  1. tools/