Python 3 compatibility

test/ios/gyptest-extension.py

Index: test/ios/gyptest-extension.py
diff --git a/test/ios/gyptest-extension.py b/test/ios/gyptest-extension.py
index c5e76d93ff259aea1d36b3410fbd2ef7e500d0a2..7c226ebfb891769f0f71cf1b2c1192e95ada8e51 100755
--- a/test/ios/gyptest-extension.py
+++ b/test/ios/gyptest-extension.py
@@ -8,6 +8,8 @@
 Verifies that ios app extensions are built correctly.
 """
 
+from __future__ import print_function
+
 import TestGyp
 import TestMac
 import subprocess
@@ -15,12 +17,12 @@ import sys
 
 def CheckStrip(p, expected):
   if expected not in subprocess.check_output(['nm','-gU', p]):
-    print expected + " shouldn't get stripped out."
+    print(expected + " shouldn't get stripped out.")
     test.fail_test()
 
 def CheckEntrypoint(p, expected):
   if expected not in subprocess.check_output(['nm', p]):
-    print expected + "not found."
+    print(expected + "not found.")
     test.fail_test()
 
 if sys.platform == 'darwin' and TestMac.Xcode.Version()>="0600":