Reland of PyLint fixes for tools-webrtc and webrtc/tools

tools-webrtc/get_landmines.py

 #!/usr/bin/env python
 # Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """
 This file emits the list of reasons why a particular build needs to be clobbered
 (or a list of 'landmines').
 """
 
 import os
 import sys
 
-script_dir = os.path.dirname(os.path.realpath(__file__))
-checkout_root = os.path.abspath(os.path.join(script_dir, os.pardir))
-sys.path.insert(0, os.path.join(checkout_root, 'build'))
+SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
+CHECKOUT_ROOT = os.path.abspath(os.path.join(SCRIPT_DIR, os.pardir))
+sys.path.insert(0, os.path.join(CHECKOUT_ROOT, 'build'))
 import landmine_utils
 
 
-distributor = landmine_utils.distributor
-gyp_defines = landmine_utils.gyp_defines
-gyp_msvs_version = landmine_utils.gyp_msvs_version
-platform = landmine_utils.platform
+platform = landmine_utils.platform  # pylint: disable=invalid-name
 
 
-def print_landmines():
+def print_landmines():  # pylint: disable=invalid-name
   """
   ALL LANDMINES ARE EMITTED FROM HERE.
   """
   # DO NOT add landmines as part of a regular CL. Landmines are a last-effort
   # bandaid fix if a CL that got landed has a build dependency bug and all bots
   # need to be cleaned up. If you're writing a new CL that causes build
   # dependency problems, fix the dependency problems instead of adding a
   # landmine.
   # See the Chromium version in src/build/get_landmines.py for usage examples.
   print 'Clobber to remove out/{Debug,Release}/args.gn (webrtc:5070)'
@@ skipping 23 matching lines @@
     print 'Another landmine for low_bandwidth_audio_test (webrtc:7430)'
 
 
 def main():
   print_landmines()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())