crash: move spool dir init into C++

BUG=chromium:766275
TEST=deleted paths and ran --init on system and checked result
TEST=precq passes

Change-Id: Ib54584cf16891fc2eada4d3a53b4f2253a1578b4
Reviewed-on: https://chromium-review.googlesource.com/717116
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ben Chan <benchan@chromium.org>
5 files changed