Create xxxhdpi density splits when density splits are enabled

build/android/gyp/package_resources.py

 #!/usr/bin/env python
 #
 # Copyright 2014 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.
 
 # pylint: disable=C0301
 """Package resources into an apk.
 
 See https://android.googlesource.com/platform/tools/base/+/master/legacy/ant-tasks/src/main/java/com/android/ant/AaptExecTask.java
@@ skipping 36 matching lines @@
         'xhdpi-v21',
     ),
     'xxhdpi': (
         'xxhdpi-v4',
         'ldrtl-xxhdpi-v4',
         'sw600dp-xxhdpi-v13',
         'ldrtl-xxhdpi-v17',
         'ldrtl-sw600dp-xxhdpi-v17',
         'xxhdpi-v21',
     ),
+    'xxxhdpi': (
+        'xxxhdpi-v4',
+        'ldrtl-xxxhdpi-v4',
+        'sw600dp-xxxhdpi-v13',
+        'ldrtl-xxxhdpi-v17',
+        'ldrtl-sw600dp-xxxhdpi-v17',
+        'xxxhdpi-v21',
+    ),
     'tvdpi': (
         'tvdpi-v4',
         'sw600dp-tvdpi-v13',
         'ldrtl-sw600dp-tvdpi-v17',
     ),
 }
 
 
 def ParseArgs():
   """Parses command line options.
@@ skipping 169 matching lines @@
       RenameDensitySplits(options.apk_path)
 
     if options.depfile:
       build_utils.WriteDepfile(
           options.depfile,
           build_utils.GetPythonDependencies())
 
 
 if __name__ == '__main__':
   main()