[tools/perf] Add a broken page to dummy_benchmark.noisy_benchmark_1

tools/perf/benchmarks/dummy_benchmark.py

 # Copyright 2015 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.
 """
 Benchmarks in this file is created for the purpose of testing telemetry
 integration with perf dashboard and bisect bot. The number they produce aren't
 meant to represent any actual performance data of the browser.
 """
 
 import random
 
 from core import perf_benchmark
 
 from telemetry.value import scalar
 from telemetry.page import page_test
 
-import page_sets
+from page_sets import dummy_story_set
 
 
 class _DummyTest(page_test.PageTest):
   def __init__(self, avg, std):
     super(_DummyTest, self).__init__()
     self._avg = avg
     self._std = std
 
   def ValidateAndMeasurePage(self, page, tab, results):
     results.AddValue(scalar.ScalarValue(
         page=page,
         name='gaussian-value', units='ms',
         value=random.gauss(self._avg, self._std),
         description=('Random number that follows the Gaussian distribution '
                      'with mean=%s and std=%s' % (self._avg, self._std))))
 
 
 class _DummyBenchmark(perf_benchmark.PerfBenchmark):
-  page_set = page_sets.DummyStorySet
+  page_set = dummy_story_set.DummyStorySet
 
 
 class DummyBenchmarkOne(_DummyBenchmark):
   """ A low noise benchmark with mean=100 & std=1. """
 
   def CreatePageTest(self, options):
     return _DummyTest(100, 1)
 
   @classmethod
   def Name(cls):
     return 'dummy_benchmark.stable_benchmark_1'
 
 
 class DummyBenchmarkTwo(_DummyBenchmark):
   """ A noisy benchmark with mean=50 & std=20. """
 
   def CreatePageTest(self, options):
     return _DummyTest(50, 20)
 
   @classmethod
   def Name(cls):
     return 'dummy_benchmark.noisy_benchmark_1'
+
+  def CreateStorySet(self, options):
+    del options  # unused
+    story_set = dummy_story_set.DummyStorySet()
+    story_set.AddStory(dummy_story_set.BrokenDummyPage(story_set))
+    return story_set