Add support for iOS application bundle to GN.

build/config/ios/ios_code_sign.py

Index: build/config/ios/ios_code_sign.py
diff --git a/build/config/ios/ios_code_sign.py b/build/config/ios/ios_code_sign.py
new file mode 100644
index 0000000000000000000000000000000000000000..c7e592f5c8f15d7fb09d888c4dd6e4105bea7152
--- /dev/null
+++ b/build/config/ios/ios_code_sign.py
@@ -0,0 +1,36 @@
+# Copyright (c) 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import argparse
+import subprocess
+import sys
+
+
+def PerformCodeSigning(args):
+  return subprocess.check_call([
+    'xcrun',
+    'codesign',
+    '--entitlements',
+    args.entitlements_path,
+    '--sign',
+    args.identity,
+    '-f',
+    args.application_path,
+  ])
+
+
+def main():
+  parser = argparse.ArgumentParser(
+      description='Code sign the specified application')
+  parser.add_argument('-p', dest='application_path', required=True,
+                      help='The application path')
+  parser.add_argument('-i', dest='identity', required=True,
+                      help='The code signing identity to use')
+  parser.add_argument('-e', dest='entitlements_path', required=True,
+                      help='The path to the entitlements .xcent')
+  PerformCodeSigning(parser.parse_args())
+
+
+if __name__ == '__main__':
+  sys.exit(main())