Remove ScopedVector from tools/gn/.

BUG=554289

Review-Url: https://codereview.chromium.org/2972113002
Cr-Original-Commit-Position: refs/heads/master@{#484744}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f6016b060cb2133958b6903a527f637adddf31b4
7 files changed
tree: f950042dcd666e8ad7ef5cf448c9a5900c07595c
  1. tools/