Add a snapshot of flutter/engine/src/build to our sdk

build/config/ios/ios_app.py

Index: build/config/ios/ios_app.py
diff --git a/build/config/ios/ios_app.py b/build/config/ios/ios_app.py
new file mode 100644
index 0000000000000000000000000000000000000000..b8bf5443ae0652a38f561ab3e1918714989a2bf3
--- /dev/null
+++ b/build/config/ios/ios_app.py
@@ -0,0 +1,137 @@
+#!/usr/bin/python
+# 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 os
+import errno
+import subprocess
+import sys
+
+PLUTIL = [
+  '/usr/bin/env',
+  'xcrun',
+  'plutil'
+]
+
+def MakeDirectories(path):
+  try:
+    os.makedirs(path)
+  except OSError as exc:
+    if exc.errno == errno.EEXIST and os.path.isdir(path):
+      return 0
+    else:
+      return -1
+
+  return 0
+
+
+def ProcessInfoPlist(args):
+  output_plist_file = os.path.abspath(os.path.join(args.output, 'Info.plist'))
+
+  if MakeDirectories(os.path.dirname(output_plist_file)) == -1:
+    return -1
+
+  return subprocess.check_call( PLUTIL + [
+    '-convert',
+    'binary1',
+    '-o',
+    output_plist_file,
+    '--',
+    args.input,
+  ])
+
+
+def PerformCodeSigning(args):
+  return subprocess.check_call([
+    '/usr/bin/env',
+    'xcrun',
+    'codesign',
+    '--entitlements',
+    args.entitlements_path,
+    '--sign',
+    args.identity,
+    '-f',
+    args.application_path,
+  ])
+
+def GenerateDSYM(args):
+  return subprocess.check_call([
+    '/usr/bin/env',
+    'xcrun',
+    'dsymutil',
+    '-o',
+    args.output,
+    args.executable_path
+  ])
+
+
+def GenerateProjectStructure(args):
+  application_path = os.path.join( args.dir, args.name + ".app" )
+  return MakeDirectories( application_path )
+
+
+def Main():
+  parser = argparse.ArgumentParser(description='A script that aids in '
+                                   'the creation of an iOS application')
+
+  subparsers = parser.add_subparsers()
+
+  # Plist Parser
+
+  plist_parser = subparsers.add_parser('plist',
+                                       help='Process the Info.plist')
+  plist_parser.set_defaults(func=ProcessInfoPlist)
+  
+  plist_parser.add_argument('-i', dest='input', help='The input plist path')
+  plist_parser.add_argument('-o', dest='output', help='The output plist dir')
+
+  # Directory Structure Parser
+
+  dir_struct_parser = subparsers.add_parser('structure',
+                      help='Creates the directory of an iOS application')
+
+  dir_struct_parser.set_defaults(func=GenerateProjectStructure)
+
+  dir_struct_parser.add_argument('-d', dest='dir', help='Out directory')
+  dir_struct_parser.add_argument('-n', dest='name', help='App name')
+
+  # Code Signing
+
+  code_signing_parser = subparsers.add_parser('codesign',
+                        help='Code sign the specified application')
+
+  code_signing_parser.set_defaults(func=PerformCodeSigning)
+
+  code_signing_parser.add_argument('-p', dest='application_path', required=True,
+                                   help='The application path')
+  code_signing_parser.add_argument('-i', dest='identity', required=True,
+                                   help='The code signing identity to use')
+  code_signing_parser.add_argument('-e', dest='entitlements_path',
+                                   required=True,
+                                   help='The path to the entitlements .xcent')
+
+  # dSYM Generation
+
+  dsym_generation_parser = subparsers.add_parser('dsym',
+                        help='Generate a .dSYM file for an executable')
+
+  dsym_generation_parser.set_defaults(func=GenerateDSYM)
+
+  dsym_generation_parser.add_argument('-e', dest='executable_path',
+                                      required=True,
+                                      help='The executable path')
+  dsym_generation_parser.add_argument('-o', dest='output',
+                                      required=True,
+                                      help='The output file name')
+
+  # Engage!
+
+  args = parser.parse_args()
+  
+  return args.func(args)
+
+
+if __name__ == '__main__':
+  sys.exit(Main())