Add BundleDebugSymbols to the Artifacts service.

Note: The method is documented as deprecated because
of a low priority plan to migrate all these methods
to a single BundleArtifacts method.

Ran ./generate.sh in chromiumos/chromite/infra/proto.

BUG=chromium:1031380
TEST=generate.sh

Change-Id: Iff135004cd002beeb93bd8307ce77733232cb628
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2535870
Reviewed-by: Stephane Belmon <sbelmon@google.com>
Commit-Queue: Michael Mortensen <mmortensen@google.com>
2 files changed