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

tools/perf/benchmarks/dummy_benchmark.py

Index: tools/perf/benchmarks/dummy_benchmark.py
diff --git a/tools/perf/benchmarks/dummy_benchmark.py b/tools/perf/benchmarks/dummy_benchmark.py
index 2011be2fb6e40633c7b0ee3e5c8bb6c6161ed98b..b182881f35e4d0996cf74446f1ae9cb474859b67 100644
--- a/tools/perf/benchmarks/dummy_benchmark.py
+++ b/tools/perf/benchmarks/dummy_benchmark.py
@@ -14,7 +14,7 @@ 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):
@@ -33,7 +33,7 @@ class _DummyTest(page_test.PageTest):
 
 
 class _DummyBenchmark(perf_benchmark.PerfBenchmark):
-  page_set = page_sets.DummyStorySet
+  page_set = dummy_story_set.DummyStorySet
 
 
 class DummyBenchmarkOne(_DummyBenchmark):
@@ -56,3 +56,9 @@ class DummyBenchmarkTwo(_DummyBenchmark):
   @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