Python 3 compatibility

PRESUBMIT.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 """Top-level presubmit script for GYP.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
@@ skipping 67 matching lines @@
   report.extend(input_api.canned_checks.PanProjectChecks(
       input_api, output_api))
   return report
 
 
 def CheckChangeOnCommit(input_api, output_api):
   report = []
 
   # Accept any year number from 2009 to the current year.
   current_year = int(input_api.time.strftime('%Y'))
-  allowed_years = (str(s) for s in reversed(xrange(2009, current_year + 1)))
+  allowed_years = (str(s) for s in reversed(range(2009, current_year + 1)))
   years_re = '(' + '|'.join(allowed_years) + ')'
 
   # The (c) is deprecated, but tolerate it until it's removed from all files.
   license = (
       r'.*? Copyright (\(c\) )?%(year)s Google Inc\. All rights reserved\.\n'
       r'.*? Use of this source code is governed by a BSD-style license that '
         r'can be\n'
       r'.*? found in the LICENSE file\.\n'
   ) % {
       'year': years_re,
@@ skipping 29 matching lines @@
     'linux_try',
     'mac_try',
     'win_try',
 ]
 
 
 def GetPreferredTryMasters(_, change):
   return {
       'client.gyp': { t: set(['defaulttests']) for t in TRYBOTS },
   }