Remove batcharchive dependency on common.IsDirectory

Remove batcharchive dependency on common.IsDirectory

BUG=732677
Review-Url: https://codereview.chromium.org/2941963002
Committed: https://github.com/luci/luci-go/commit/35426aab5e558df793b116a5f0c516633a32376b

[mcgreevy, 2017-06-15 05:55:39]

mcgreevy@chromium.org changed reviewers:
+ tansell@chromium.org

[mithro, 2017-06-15 06:14:55]

The CQ bit was checked by tansell@chromium.org

[mithro, 2017-06-15 06:14:55]

lgtm

[commit-bot: I haz the power, 2017-06-15 06:15:09]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-06-15 06:23:12]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1497507295565350,
"parent_rev": "3b2cf368c09e435c41d69235e93ff7eb5980bd5b", "commit_rev":
"35426aab5e558df793b116a5f0c516633a32376b"}

[commit-bot: I haz the power, 2017-06-15 06:23:15]

Description was changed from

==========
Remove batcharchive dependency on common.IsDirectory

BUG=732677
==========

to

==========
Remove batcharchive dependency on common.IsDirectory

BUG=732677

Review-Url: https://codereview.chromium.org/2941963002
Committed:
https://github.com/luci/luci-go/commit/35426aab5e558df793b116a5f0c516633a32376b
==========

[commit-bot: I haz the power, 2017-06-15 06:23:16]

Committed patchset #2 (id:20001) as
https://github.com/luci/luci-go/commit/35426aab5e558df793b116a5f0c516633a32376b