[layoutng] Make DerivedGeometry use partition alloc

R=ikilpatrick@chromium.org,eae@chromium.org

Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: I4d70f5a3e22a32ee2c9c261b731fd7afafe7ce0f
Reviewed-on: https://chromium-review.googlesource.com/1227252
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Commit-Queue: Christian Biesinger <cbiesinger@chromium.org>
Commit-Queue: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591533}
1 file changed