Fix #1183 (#1184)

* Use PyObjC recommended pattern to call superclass init to fix #1183

* Use the pylint comments from gurl.

code/client/app_usage_monitor

@@ -35,6 +35,11 @@ import select
 import socket
 import sys
 
+# builtin super doesn't work with Cocoa classes in recent PyObjC releases.
+# pylint: disable=redefined-builtin,no-name-in-module
+from objc import super
+# pylint: enable=redefined-builtin,no-name-in-module
+
 try:
     # Apple frameworks
     from AppKit import NSWorkspace
@@ -114,7 +119,7 @@ class NotificationHandler(NSObject):
 
     def init(self):
         """NSObject-compatible initializer"""
-        self = super(NotificationHandler, self).init()
+        self = super().init()
         if self is None:
             return None