Move buildtools into src

BUG=927867
R=dpranke,thakis

Change-Id: Ic7094d9d80a9dc2d7a3ac2e715c8dddfa4a1e0c8
Reviewed-on: https://chromium-review.googlesource.com/c/1450459
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#629403}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: e7001969a4527bc416ef354a78195b942160e79c
65 files changed