old_contents: PROTOCALS = ('http://', 'https://', '')
  
  def get_urls(domain, www=False):
      
      urls = ["%s%s.com"]
      
      if www:
          urls.append("%swww.%s.com")
  
      return flatten(map(lambda url: map(lambda protocol: 
          url % (protocol, domain), PROTOCALS), urls))
  
  def flatten(l):
      return [item for sublist in l for item in sublist]
  
  """
  If adding values to this list, must run resource_helpers.wipe_blacklist() in shell
  """
  DEFAULT_BLACKLIST = set(flatten([
      get_urls('google', www=True),
      get_urls('maps.google'),
      get_urls('mail.google'),
      get_urls('plus.google'),
      get_urls('drive.google'),
      get_urls('docs.google'),
      get_urls('images.google'),
      get_urls('bing'),
      get_urls('mail.yahoo'),
      get_urls('search.yahoo'),
      get_urls('duckduckgo'),
      get_urls('hotmail'),
      get_urls('facebook', www=True),
      ('chrome-devtools',),
      ('chrome',),
      ('localhost',),
  ]))
  
new_contents: PROTOCALS = ('http://', 'https://', '')
  
  def get_urls(domain, www=False):
      
      urls = ["%s%s.com"]
      
      if www:
          urls.append("%swww.%s.com")
  
      return flatten(map(lambda url: map(lambda protocol: 
          url % (protocol, domain), PROTOCALS), urls))
  
  def flatten(l):
      return [item for sublist in l for item in sublist]
  
  """
  If adding values to this list, must run resource_helpers.wipe_blacklist() in shell
  """
  DEFAULT_BLACKLIST = set(flatten([
      get_urls('google', www=True),
      get_urls('maps.google'),
      get_urls('mail.google'),
      get_urls('plus.google'),
      get_urls('drive.google'),
      get_urls('docs.google'),
      get_urls('images.google'),
      get_urls('eyebrowse.csail.mit.edu'),
      get_urls('bing'),
      get_urls('mail.yahoo'),
      get_urls('search.yahoo'),
      get_urls('duckduckgo'),
      get_urls('hotmail'),
      get_urls('facebook', www=True),
      ('chrome-devtools',),
      ('chrome',),
      ('localhost',),
  ]))
  
subject: remove eyebrowse as a potential whitelist