[pinpoint] Change refactor.

dashboard/dashboard/pinpoint/models/isolate_test.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import unittest
 
 from google.appengine.ext import ndb
 from google.appengine.ext import testbed
 
 from dashboard.pinpoint.models import change
 from dashboard.pinpoint.models import isolate
 
 
-_CHANGE_1 = change.Change(change.Dep('chromium', 'f9f2b720'))
-_CHANGE_2 = change.Change(change.Dep('chromium', 'f35be4f1'))
+_CHANGE_1 = change.Change((change.Commit('chromium', 'f9f2b720'),))
+_CHANGE_2 = change.Change((change.Commit('chromium', 'f35be4f1'),))
 
 
 class IsolateTest(unittest.TestCase):
 
   def setUp(self):
     self.testbed = testbed.Testbed()
     self.testbed.activate()
     self.testbed.init_datastore_v3_stub()
     self.testbed.init_memcache_stub()
     ndb.get_context().clear_cache()
 
   def tearDown(self):
     self.testbed.deactivate()
 
   def testPutAndGet(self):
     isolate.Put((
         ('Mac Builder', _CHANGE_1, 'telemetry_perf', '7c7e90be'),
         ('Mac Builder', _CHANGE_2, 'telemetry_perf', '38e2f262')))
 
     isolate_hash = isolate.Get('Mac Builder', _CHANGE_1, 'telemetry_perf')
     self.assertEqual(isolate_hash, '7c7e90be')
 
   def testUnknownIsolate(self):
     with self.assertRaises(KeyError):
       isolate.Get('Wrong Builder', _CHANGE_1, 'telemetry_perf')