Source release 16.4.1

third_party/gyp/common.py

@@ -4,7 +4,7 @@
 
 from __future__ import with_statement
 
-import collections
+import collections.abc
 import errno
 import filecmp
 import os.path
@@ -494,7 +494,7 @@ def uniquer(seq, idfun=None):
 
 
 # Based on http://code.activestate.com/recipes/576694/.
-class OrderedSet(collections.MutableSet):
+class OrderedSet(collections.abc.MutableSet):
   def __init__(self, iterable=None):
     self.end = end = []
     end += [None, end, end]         # sentinel node for doubly linked list