Python 3 compatibility

pylib/gyp/MSVSUserFile.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.
 
 """Visual Studio user preferences file writer."""
 
 import os
 import re
 import socket # for gethostname
 
@@ skipping 73 matching lines @@
         executable.  All elements of the command will be quoted if
         necessary.
       working_directory: other files which may trigger the rule. (optional)
     """
     command = _QuoteWin32CommandLineArgs(command)
 
     abs_command = _FindCommandInPath(command[0])
 
     if environment and isinstance(environment, dict):
       env_list = ['%s="%s"' % (key, val)
-                  for (key,val) in environment.iteritems()]
+                  for (key,val) in environment.items()]
       environment = ' '.join(env_list)
     else:
       environment = ''
 
     n_cmd = ['DebugSettings',
              {'Command': abs_command,
               'WorkingDirectory': working_directory,
               'CommandArguments': " ".join(command[1:]),
               'RemoteMachine': socket.gethostname(),
               'Environment': environment,
@@ skipping 23 matching lines @@
     # Find the config, and add it if it doesn't exist.
     if config_name not in self.configurations:
       self.AddConfig(config_name)
 
     # Add the DebugSettings onto the appropriate config.
     self.configurations[config_name].append(n_cmd)
 
   def WriteIfChanged(self):
     """Writes the user file."""
     configs = ['Configurations']
-    for config, spec in sorted(self.configurations.iteritems()):
+    for config, spec in sorted(self.configurations.items()):
       configs.append(spec)
 
     content = ['VisualStudioUserFile',
                {'Version': self.version.ProjectVersion(),
                 'Name': self.name
                },
                configs]
     easy_xml.WriteXmlIfChanged(content, self.user_file_path,
                                encoding="Windows-1252")