Revert of Remove apk-codegen.xml

build/android/gyp/util/build_utils.py

 # Copyright 2013 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 fnmatch
 import json
 import os
 import pipes
 import shlex
 import shutil
@@ skipping 41 matching lines @@
   # https://code.google.com/p/gyp/issues/detail?id=327
   # is addressed.
   gyp_string = gyp_string.replace('##', '$')
   return shlex.split(gyp_string)
 
 
 def CheckOptions(options, parser, required=None):
   if not required:
     return
   for option_name in required:
-    if getattr(options, option_name) is None:
+    if not getattr(options, option_name):
       parser.error('--%s is required' % option_name.replace('_', '-'))
 
 def WriteJson(obj, path, only_if_changed=False):
   old_dump = None
   if os.path.exists(path):
     with open(path, 'r') as oldfile:
       old_dump = oldfile.read()
 
   new_dump = json.dumps(obj)
 
@@ skipping 70 matching lines @@
 
 
 def PrintWarning(message):
   print 'WARNING: ' + message
 
 
 def PrintBigWarning(message):
   print '*****     ' * 8
   PrintWarning(message)
   print '*****     ' * 8