Remove sandbox/win/tools.

The files therein look unused, haven't been really touched since 2012, aren't
referenced in any build files, and have some maintenance cost.

BUG=661774
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win10_chromium_x64_rel_ng
NOTRY=true

Review-Url: https://codereview.chromium.org/2773333002
Review-Url: https://codereview.chromium.org/2773333002
Cr-Original-Commit-Position: refs/heads/master@{#467366}
Committed: https://chromium.googlesource.com/chromium/src/+/6625b2f764ae4efb0637215660500ba721b8a43d
Cr-Original-Original-Commit-Position: refs/heads/master@{#459696}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 1f3923624ee0a8ae0f2ec3136e376ca3a2a5c028
12 files changed
tree: 93b3ea2ad8defa1c4463a878b067fdcb9bce969e
  1. linux/
  2. mac/
  3. win/
  4. BUILD.gn
  5. features.gni
  6. OWNERS
  7. sandbox_export.h