Issue 4382 - Use new syntax to catch exceptions in buildtools

packagerChrome.py

 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import errno
 import io
 import json
 import os
 import re
 from StringIO import StringIO
@@ skipping 235 matching lines @@
                         # Remove access keys
                         value = sourceData[stringID]
                         match = re.search(r'^(.*?)\s*\(&.\)$', value)
                         if match:
                             value = match.group(1)
                         else:
                             index = value.find('&')
                             if index >= 0:
                                 value = value[0:index] + value[index + 1:]
                         data[key] = {'message': value}
-            except Exception, e:
+            except Exception as e:
                 print 'Warning: error importing locale data from %s: %s' % (sourceFile, e)
 
             files[targetFile] = toJson(data)
 
 
 def truncate(text, length_limit):
     if len(text) <= length_limit:
         return text
     return text[:length_limit - 1].rstrip() + u'\u2026'
 
@@ skipping 118 matching lines @@
         files['qunit/index.html'] = createScriptPage(params, 'testIndex.html.tmpl',
                                                      ('general', 'testScripts'))
 
     zipdata = files.zipToString()
     signature = None
     pubkey = None
     if keyFile != None:
         signature = signBinary(zipdata, keyFile)
         pubkey = getPublicKey(keyFile)
     writePackage(outFile, pubkey, signature, zipdata)