update_chroot: Call ensure_bootstrap

To be able to emerge chromeos-chrome, the cros chroot needs to make
sure that depot_tools has already downloaded some binaries,
otherwise, emerging chromeos-chrome would fail with a sandbox
error that does not really tell the developer how to fix the issue.

Calling ensure_bootstrap in update_chroot should do the trick.

BUG=chromium:770508, chromium:936151
TEST=cros_sdk --chrome_root=$CHROME_ROOT
     rm -rf /mnt/host/depot_tools/.cipd*
     CHROME_ORIGIN=LOCAL_SOURCE emerge-$BOARD chromeos-chrome
     cd ~/chrome_root/src/third_party/depot_tools; git status
        => no change

Change-Id: I7aebb6dd3f0b4bce9650a3a23943a6ce88c3689f
Reviewed-on: https://chromium-review.googlesource.com/803196
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
(cherry picked from commit 03a6305ffc8128a8a48b0e6e5c0a794e1a46d2ba)
Reviewed-on: https://chromium-review.googlesource.com/c/1489877
Commit-Queue: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>
1 file changed