The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/3dbf7df67464e43ff03c3d89130fc93f277f0714

commit 3dbf7df67464e43ff03c3d89130fc93f277f0714
Author: Shuotao Gao <stgao@chromium.org>
Date: Fri Apr 14 21:50:22 2017

[Findit] Collect tree closures from tree status app.

1. Retrieve tree status from chromium-status app.
2. Detect all the complete tree closures.
3. Save them in datastore.

Also set up a cron job to run it daily.

BUG= 703270 

Change-Id: Ic6293732c81224e7f2c033cbf10cfb978dc84695
Reviewed-on: https://chromium-review.googlesource.com/477376
Reviewed-by: Chan Li <chanli@chromium.org>
Commit-Queue: Shuotao Gao <stgao@chromium.org>

[add] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/handlers/collect_tree_closures.py
[add] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/model/tree_closure.py
[modify] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/libs/time_util.py
[add] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/handlers/test/collect_tree_closures_test.py
[modify] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/main.py
[modify] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/index.yaml
[add] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/model/test/tree_closure_test.py
[modify] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/cron.yaml
[modify] https://crrev.com/3dbf7df67464e43ff03c3d89130fc93f277f0714/appengine/findit/libs/test/time_util_test.py

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/1ea9e2bb5dfaac40ad8b2c545903e6af03021c36

commit 1ea9e2bb5dfaac40ad8b2c545903e6af03021c36
Author: Shuotao Gao <stgao@chromium.org>
Date: Fri Apr 14 23:02:34 2017

[Findit] Show tree closure metrics on UI.

BUG= 703270 

Change-Id: Ica4ab66eaff5041438ef0007330a5cab1e2a0baf
Reviewed-on: https://chromium-review.googlesource.com/477378
Commit-Queue: Shuotao Gao <stgao@chromium.org>
Reviewed-by: Chan Li <chanli@chromium.org>
Reviewed-by: Roberto Carrillo <robertocn@chromium.org>

[modify] https://crrev.com/1ea9e2bb5dfaac40ad8b2c545903e6af03021c36/appengine/findit/handlers/auto_revert_metrics.py
[modify] https://crrev.com/1ea9e2bb5dfaac40ad8b2c545903e6af03021c36/appengine/findit/templates/auto_revert_metrics.html
[modify] https://crrev.com/1ea9e2bb5dfaac40ad8b2c545903e6af03021c36/appengine/findit/handlers/test/auto_revert_metrics_test.py
[modify] https://crrev.com/1ea9e2bb5dfaac40ad8b2c545903e6af03021c36/appengine/findit/index.yaml