Explicitly setting names for stories in used page_sets

tools/perf/page_sets/desktop_memory.py

 # Copyright 2017 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.
 import logging
 import py_utils
 
 from telemetry.page import page as page_module
 from telemetry.page import shared_page_state
 from telemetry import story
 
 _DUMP_WAIT_TIME = 3
 _ITERATIONS = 10
 
 class DesktopMemoryPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(DesktopMemoryPage, self).__init__(
         url=url, page_set=page_set,
-        shared_page_state_class=shared_page_state.SharedDesktopPageState)
+        shared_page_state_class=shared_page_state.SharedDesktopPageState,
+        name=url)
 
   def _DumpMemory(self, action_runner, phase):
     with action_runner.CreateInteraction(phase):
       action_runner.Wait(_DUMP_WAIT_TIME)
       action_runner.ForceGarbageCollection()
       action_runner.SimulateMemoryPressureNotification('critical')
       action_runner.Wait(_DUMP_WAIT_TIME)
       action_runner.tab.browser.DumpMemory()
 
   def RunPageInteractions(self, action_runner):
@@ skipping 12 matching lines @@
       new_tab.Close()
 
     self._DumpMemory(action_runner, 'post')
 
 
 class DesktopMemoryPageSet(story.StorySet):
 
   """ Desktop sites with interesting memory characteristics """
 
   def __init__(self):
-    super(DesktopMemoryPageSet, self).__init__()
+    super(DesktopMemoryPageSet, self).__init__(verify_names=True)
 
     urls_list = [
       'http://www.google.com',
       "http://www.live.com",
       "http://www.youtube.com",
       "http://www.wikipedia.org",
       "http://www.flickr.com/",
       "http://www.cnn.com/",
       "http://www.adobe.com/",
       "http://www.aol.com/",
       "http://www.cnet.com/",
       "http://www.godaddy.com/",
       "http://www.walmart.com/",
       "http://www.skype.com/",
     ]
 
     for url in urls_list:
       self.AddStory(DesktopMemoryPage(url, self))