Take tools/gn behind the barn.

gn now lives at https://gn.googlesource.com/gn/ , so delete
src/tools/gn, and bot configuration to run gn_unittests.

Bug: 859536
Change-Id: I64f4d4fb00349cb8d7143d0a1b96088cc173e27c
Reviewed-on: https://chromium-review.googlesource.com/1129822
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Brett Wilson <brettw@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#574140}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 80816b51ed94d0d833543d3453226610518c94b7
1 file changed
tree: 696c86d8e72d2af30affbe3110edb699b3a73b10
  1. html_templates/
  2. static/
  3. coverage.py
  4. OWNERS
  5. test_suite.txt