Explicitly setting story names for thread_times benchmarks

tools/perf/page_sets/simple_mobile_sites.py

Index: tools/perf/page_sets/simple_mobile_sites.py
diff --git a/tools/perf/page_sets/simple_mobile_sites.py b/tools/perf/page_sets/simple_mobile_sites.py
index 795728879ef5694bd3e33f38c9827de0f4d853fa..f3cb9a6e1c002e4992d64809b94a2deac5ea35b5 100644
--- a/tools/perf/page_sets/simple_mobile_sites.py
+++ b/tools/perf/page_sets/simple_mobile_sites.py
@@ -13,7 +13,8 @@ class SimplePage(page_module.Page):
         url=url,
         page_set=page_set,
         shared_page_state_class=shared_page_state.Shared10InchTabletPageState,
-        credentials_path='data/credentials.json')
+        credentials_path='data/credentials.json',
+        name=url)
 
   def RunNavigateSteps(self, action_runner):
     super(SimplePage, self).RunNavigateSteps(action_runner)
@@ -37,7 +38,8 @@ class SimpleMobileSitesPageSet(story.StorySet):
   def __init__(self):
     super(SimpleMobileSitesPageSet, self).__init__(
       archive_data_file='data/simple_mobile_sites.json',
-      cloud_storage_bucket=story.PUBLIC_BUCKET)
+      cloud_storage_bucket=story.PUBLIC_BUCKET,
+      verify_names=True)
 
     scroll_page_list = [
       # Why: Scrolls moderately complex pages (up to 60 layers)