Explicitly setting names for stories in unittests

tools/perf/contrib/oilpan/oilpan_gc_times_unittest.py

 # Copyright 2014 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.
 
 from contrib.oilpan import oilpan_gc_times
 
 from telemetry.internal.results import page_test_results
 from telemetry.page import page as page_module
 from telemetry.testing import options_for_unittests
 from telemetry.testing import page_test_test_case
 from telemetry.timeline import model
 from telemetry.timeline import slice as slice_data
 
 import mock  # pylint: disable=import-error
 
 
 class TestOilpanGCTimesPage(page_module.Page):
 
   def __init__(self, page_set):
     super(TestOilpanGCTimesPage, self).__init__(
-        'file://blank.html', page_set, page_set.base_dir)
+        'file://blank.html', page_set, page_set.base_dir, name='blank.html')
 
   def RunPageInteractions(self, action_runner):
     with action_runner.CreateGestureInteraction('ScrollAction'):
       action_runner.ScrollPage()
 
 
 class OilpanGCTimesTestData(object):
 
   def __init__(self, thread_name):
     self._model = model.TimelineModel()
@@ skipping 252 matching lines @@
     data.AddSlice(self._KEY_COMPLETE_SWEEP, 862, 42, {})
     data.AddSlice(self._KEY_MARK, 904, 43,
                   {'lazySweeping': False, 'gcReason': 'IdleGC'})
     last_measure = data.AddSlice(self._KEY_COMPLETE_SWEEP, 947, 44, {})
 
     # Async event
     async_dur = last_measure.end - first_measure.start
     data.AddAsyncSlice(self._KEY_MEASURE, first_measure.start, async_dur, {})
 
     return data