[pinpoint] Move _previous_builds from the Execution class to the Quest instance.

[pinpoint] Move _previous_builds from the Execution class to the Quest instance.

BUG=catapult:#3917

Review-Url: https://chromiumcodereview.appspot.com/3017633002
Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/32020f518fc6d8a9e714c9cf13897ff0a944996f

[dtu, 2017-09-26 02:49:33]

dtu@chromium.org changed reviewers:
+ perezju@chromium.org, simonhatch@chromium.org, sullivan@chromium.org

[perezju, 2017-09-26 09:24:51]

lgtm

definitely looks better than having it stashed in the class as before

[dtu, 2017-09-26 20:00:38]

The CQ bit was checked by dtu@chromium.org

[commit-bot: I haz the power, 2017-09-26 20:00:47]

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, 2017-09-26 20:33:00]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1506456038486940, "parent_rev":
"cf05c91b67574954c0f62d369077943f04f5de07", "commit_rev":
"32020f518fc6d8a9e714c9cf13897ff0a944996f"}

[commit-bot: I haz the power, 2017-09-26 20:33:04]

Description was changed from

==========
[pinpoint] Move _previous_builds from the Execution class to the Quest instance.

BUG=catapult:#3917
==========

to

==========
[pinpoint] Move _previous_builds from the Execution class to the Quest instance.

BUG=catapult:#3917

Review-Url: https://chromiumcodereview.appspot.com/3017633002
Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
==========

[commit-bot: I haz the power, 2017-09-26 20:33:05]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...