Set changeHorizon to put an upper-bound on database size, otherwise the database will never stop gr…

Set changeHorizon to put an upper-bound on database size, otherwise the database will never stop growing.

3000 changes is about 2 weeks of chromium/src commits.

See http://docs.buildbot.net/latest/manual/cfg-global.html#cfg-buildHorizon
and https://cs.chromium.org/chromium/build/third_party/buildbot_8_4p1/buildbot/db/changes.py?type=cs&q=f:db/changes.py+pruneChanges&sq=package:chromium&l=258

BUG=620572
Committed: https://chromium.googlesource.com/chromium/tools/build/+/b361b37b9b382891f50f10971bb0b6fcdc3dce63

[dsansome, 2016-06-23 05:58:48]

Description was changed from

==========
Set changeHorizon to put an upper-bound on database size, otherwise the database
will never stop growing.

3000 changes is about 2 weeks of chromium/src commits.

See http://docs.buildbot.net/latest/manual/cfg-global.html#cfg-buildHorizon
and
https://cs.chromium.org/chromium/build/third_party/buildbot_8_4p1/buildbot/db...


BUG=
==========

to

==========
Set changeHorizon to put an upper-bound on database size, otherwise the database
will never stop growing.

3000 changes is about 2 weeks of chromium/src commits.

See http://docs.buildbot.net/latest/manual/cfg-global.html#cfg-buildHorizon
and
https://cs.chromium.org/chromium/build/third_party/buildbot_8_4p1/buildbot/db...

BUG=620572
==========

[dsansome, 2016-06-23 05:58:56]

dsansome@chromium.org changed reviewers:
+ friedman@chromium.org

[friedman1, 2016-06-23 22:08:00]

friedman@google.com changed reviewers:
+ stip@chromium.org, vadimsh@chromium.org
- friedman@chromium.org

[ghost stip (do not use), 2016-06-23 23:46:29]

lgtm

[Vadim Sh., 2016-06-27 18:09:19]

lgtm

[dsansome, 2016-06-28 08:34:35]

The CQ bit was checked by dsansome@chromium.org

[commit-bot: I haz the power, 2016-06-28 08:34:39]

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, 2016-06-28 08:39:17]

Description was changed from

==========
Set changeHorizon to put an upper-bound on database size, otherwise the database
will never stop growing.

3000 changes is about 2 weeks of chromium/src commits.

See http://docs.buildbot.net/latest/manual/cfg-global.html#cfg-buildHorizon
and
https://cs.chromium.org/chromium/build/third_party/buildbot_8_4p1/buildbot/db...

BUG=620572
==========

to

==========
Set changeHorizon to put an upper-bound on database size, otherwise the database
will never stop growing.

3000 changes is about 2 weeks of chromium/src commits.

See http://docs.buildbot.net/latest/manual/cfg-global.html#cfg-buildHorizon
and
https://cs.chromium.org/chromium/build/third_party/buildbot_8_4p1/buildbot/db...

BUG=620572

Committed:
https://chromium.googlesource.com/chromium/tools/build/+/b361b37b9b382891f50f...
==========

[commit-bot: I haz the power, 2016-06-28 08:39:18]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/tools/build/+/b361b37b9b382891f50f...