Moving noisy pages (ESPN and LA Times) from key_mobile_sites into tough_scheduling_cases.

tools/perf/page_sets/key_mobile_sites.py

 # Copyright 2014 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.
 from telemetry.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 class KeyMobileSitesPage(page_module.Page):
 
   def __init__(self, url, page_set, name=''):
@@ skipping 522 matching lines @@
       # Why: #15 Alexa news
       'http://online.wsj.com/home-page',
       # Why: Image-heavy mobile site
       'http://www.deviantart.com/',
       # Why: Top search engine
       ('http://www.baidu.com/s?wd=barack+obama&rsv_bp=0&rsv_spt=3&rsv_sug3=9&'
        'rsv_sug=0&rsv_sug4=3824&rsv_sug1=3&inputT=4920'),
       # Why: Top search engine
       'http://www.bing.com/search?q=sloths',
       # Why: Good example of poor initial scrolling
-      'http://www.latimes.com',
-      # Why: Good example of poor initial scrolling
-      'http://ftw.usatoday.com/2014/05/spelling-bee-rules-shenanigans',
-      # Why: Good example of poor initial scrolling
-      'http://m.espn.go.com/nhl/rankings'
+      'http://ftw.usatoday.com/2014/05/spelling-bee-rules-shenanigans'
     ]
 
     for url in urls_list:
       self.AddPage(KeyMobileSitesPage(url, self))