Python 3 compatibility

test/ios/gyptest-app-ios.py

 #!/usr/bin/env python
 
 # 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.
 
 """
 Verifies that ios app bundles are built correctly.
 """
 
+from __future__ import print_function
+
 import TestGyp
 
 import subprocess
 import sys
 
 def CheckFileXMLPropertyList(file):
   output = subprocess.check_output(['file', file])
   # The double space after XML is intentional.
   if not 'XML  document text' in output:
-    print 'File: Expected XML  document text, got %s' % output
+    print('File: Expected XML  document text, got %s' % output)
     test.fail_test()
 
 def CheckFileBinaryPropertyList(file):
   output = subprocess.check_output(['file', file])
   if not 'Apple binary property list' in output:
-    print 'File: Expected Apple binary property list, got %s' % output
+    print('File: Expected Apple binary property list, got %s' % output)
     test.fail_test()
 
 if sys.platform == 'darwin':
   test = TestGyp.TestGyp(formats=['xcode', 'ninja'])
 
   test.run_gyp('test.gyp', chdir='app-bundle')
 
   test.build('test.gyp', test.ALL, chdir='app-bundle')
 
   # Test that the extension is .bundle
@@ skipping 31 matching lines @@
       'Test App Gyp.app/English.lproj/Main_iPhone.storyboardc',
       chdir='app-bundle')
 
   # Packaging
   test.built_file_must_exist('Test App Gyp.app/PkgInfo',
                              chdir='app-bundle')
   test.built_file_must_match('Test App Gyp.app/PkgInfo', 'APPLause',
                              chdir='app-bundle')
 
   test.pass_test()