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

tools/perf/page_sets/mobile_memory.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 MobileMemoryPage(page_module.Page):
 
@@ skipping 70 matching lines @@
     super(MobileMemoryPageSet, self).__init__(
         archive_data_file='data/mobile_memory.json',
         cloud_storage_bucket=story.PARTNER_BUCKET)
 
     self.AddStory(GmailPage(self))
     self.AddStory(GoogleSearchPage(self))
 
     urls_list = [
       # Why: Renderer process memory bloat
       'http://techcrunch.com',
-      # pylint: disable=C0301
+      # pylint: disable=line-too-long
       'http://techcrunch.com/2014/02/17/pixel-brings-brings-old-school-video-game-art-to-life-in-your-home/',
       'http://techcrunch.com/2014/02/15/kickstarter-coins-2/',
       'http://techcrunch.com/2014/02/15/was-y-combinator-worth-it/',
     ]
 
     for url in urls_list:
       self.AddStory(ScrollPage(url, self))