convert to print_function

BUG=chromium:414895
TEST=`./cbuildbot/run_tests` passes
TEST=`cros lint` passes (it complains if print is used incorrectly)
TEST=`cbuildbot chromiumos-sdk` passes
TEST=`cbuildbot lumpy-release` passes

Change-Id: I67e7e1290b03a16525e0c2b1afa74ebbd8d3508f
Reviewed-on: https://chromium-review.googlesource.com/218572
Reviewed-by: David James <davidjames@chromium.org>
Reviewed-by: Yu-Ju Hong <yjhong@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/loman.py b/scripts/loman.py
index d0c510f..3cadef2 100644
--- a/scripts/loman.py
+++ b/scripts/loman.py
@@ -4,6 +4,8 @@
 
 """This module allows adding and deleting of projects to the local manifest."""
 
+from __future__ import print_function
+
 import logging
 import platform
 import optparse
@@ -179,7 +181,8 @@
     if args:
       parser.error("--upgrade-minilayout takes no arguments.")
     if not upgrade_required:
-      print "This repository checkout isn't using minilayout.xml; nothing to do"
+      print("This repository checkout isn't using minilayout.xml; "
+            "nothing to do")
     else:
       _UpgradeMinilayout(options)
     return 0
@@ -229,7 +232,7 @@
   elif main_element is not None:
     if options.remote is not None:
       # Likely this project wasn't meant to be remote, so workon main element
-      print "Project already exists in manifest. Using that as workon project."
+      print("Project already exists in manifest. Using that as workon project.")
       _AddProjectsToManifestGroups(options, main_element.attrib['name'])
     else:
       # Conflict will occur; complain.