Move user_story.user_story_set to story.story_set

tools/telemetry/telemetry/page/shared_page_state.py

Index: tools/telemetry/telemetry/page/shared_page_state.py
diff --git a/tools/telemetry/telemetry/page/shared_page_state.py b/tools/telemetry/telemetry/page/shared_page_state.py
index 38a9b6e8209be61dea18b6c6f07d357b81a9b63b..833b694c0aafd1776b026749cd5290e11506628c 100644
--- a/tools/telemetry/telemetry/page/shared_page_state.py
+++ b/tools/telemetry/telemetry/page/shared_page_state.py
@@ -37,15 +37,15 @@ class SharedPageState(shared_state.SharedState):
 
   _device_type = None
 
-  def __init__(self, test, finder_options, user_story_set):
-    super(SharedPageState, self).__init__(test, finder_options, user_story_set)
+  def __init__(self, test, finder_options, story_set):
+    super(SharedPageState, self).__init__(test, finder_options, story_set)
     if isinstance(test, timeline_based_measurement.TimelineBasedMeasurement):
       # This is to avoid the cyclic-import caused by timeline_based_page_test.
       from telemetry.web_perf import timeline_based_page_test
       self._test = timeline_based_page_test.TimelineBasedPageTest(test)
     else:
       self._test = test
-    device_type = self._device_type or user_story_set.user_agent_type
+    device_type = self._device_type or story_set.user_agent_type
     _PrepareFinderOptions(finder_options, self._test, device_type)
     self.browser = None
     self._finder_options = finder_options