MD Settings: Migrate from paper-drawer-panel to app-drawer.

third_party/polymer/v1_0/find_unused_elements.py

 #!/usr/bin/python2
 
 # Copyright 2016 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.
 
 """Identifies Polymer elements that downloaded but not used by Chrome.
 
 Only finds "first-order" unused elements; re-run after removing unused elements
 to check if other elements have become unused.
 """
 
 import os
 import re
 import subprocess
 
 
 class UnusedElementsDetector(object):
   """Finds unused Polymer elements."""
 
   # Unused elements to ignore because we plan to use them soon.
   __WHITELIST = (
-    # TODO(tsergeant): Use element or remove from whitelist.
-    'app-layout',
     # TODO(dschuyler): Use element or remove from whitelist.
     'app-route',
     # Necessary for closure.
     'polymer-externs',
   )
 
   def __init__(self):
     polymer_dir = os.path.dirname(os.path.realpath(__file__))
     self.__COMPONENTS_DIR = os.path.join(polymer_dir, 'components-chromium')
 
@@ skipping 117 matching lines @@
           # scripts).
           if re.search('/%s' % element_dir,
                        self.__StripComments(
                          os.path.join(dirpath, filename))):
             return True
     return False
 
 
 if __name__ == '__main__':
   UnusedElementsDetector().Run()