make version of ts_mon compatible with appengine

infra_libs/ts_mon/gae/__init__.py

+# Copyright 2015 The Chromium Authors. All rights reserved.

[agable, 2015/08/10 22:23:58]

Name this internal directory "common", rather than "gae", as it is used by both
ts_mon and gae_ts_mon.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+#pylint: skip-file
+

[agable, 2015/08/10 23:04:39]

Actually, though, the contents of this file shouldn't be necessary at all. This
should be an empty __init__.py.

The point of ts_mon/__init__.py having all of these statements is so that it
exports an API. The classes/functions appearing in this file are the ones that
consumers can use. ts_mon/common/ doesn't need to export an API. No one should
be using it -- they should only use ts_mon/ or gae_ts_mon/, so *those* are what
should provide an api.

So the top-level ts_mon/__init__.py should continue to export all of these
things, but do it as
from common.distribution import Distribution
etc.

+from distribution import Distribution
+from distribution import FixedWidthBucketer
+from distribution import GeometricBucketer
+
+from errors import MonitoringError
+from errors import MonitoringDecreasingValueError
+from errors import MonitoringDuplicateRegistrationError
+from errors import MonitoringIncrementUnsetValueError
+from errors import MonitoringInvalidFieldTypeError
+from errors import MonitoringInvalidValueTypeError
+from errors import MonitoringTooManyFieldsError
+from errors import MonitoringNoConfiguredMonitorError
+from errors import MonitoringNoConfiguredTargetError
+
+from helpers import ScopedIncrementCounter
+
+from targets import DeviceTarget
+from targets import TaskTarget