[Telemetry + tools/perf] Modify the pylint disable message to use symbolic name

tools/perf/page_sets/key_silk_cases.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 shared_page_state
 from telemetry import story
 
 
 class KeySilkCasesPage(page_module.Page):
 
@@ skipping 59 matching lines @@
 
 class Page3(KeySilkCasesPage):
 
   """
   Why: Best-known method for fake sticky. Janks sometimes. Interacts badly with
   compositor scrolls.
   """
 
   def __init__(self, page_set, run_no_page_interactions):
     super(Page3, self).__init__(
-      # pylint: disable=C0301
+      # pylint: disable=line-too-long
       url='http://groupcloned.com/test/plain/sticky-using-webkit-backface-visibility.html',
       page_set=page_set, run_no_page_interactions=run_no_page_interactions)
 
   def PerformPageInteractions(self, action_runner):
     with action_runner.CreateGestureInteraction('ScrollAction'):
       action_runner.ScrollElement(selector='#container')
 
 
 class Page4(KeySilkCasesPage):
 
@@ skipping 657 matching lines @@
     self.AddStory(SilkFinance(self, run_no_page_interactions))
     # Flaky interaction steps on Android; crbug.com/507865
     # self.AddStory(PolymerTopeka(self, run_no_page_interactions))
     self.AddStory(Masonry(self, run_no_page_interactions))
 
     for page in self:
       assert (page.__class__.RunPageInteractions ==
               KeySilkCasesPage.RunPageInteractions), (
               'Pages in this page set must not override KeySilkCasesPage\' '
               'RunPageInteractions method.')