Create xxxhdpi density splits when density splits are enabled

build/android/finalize_splits_action.gypi

 # Copyright 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.
 
 # This file is meant to be included into an action to provide an action that
 # signs and zipaligns split APKs.
 #
 # Required variables:
 #  apk_name - Base name of the apk.
 # Optional variables:
@@ skipping 27 matching lines @@
     '--key-name=<(keystore_name)',
     '--key-passwd=<(keystore_password)',
   ],
   'conditions': [
     ['density_splits == 1', {
       'message': 'Signing/aligning <(_target_name) density splits',
       'inputs': [
         '<(resource_packaged_apk_path)-hdpi',
         '<(resource_packaged_apk_path)-xhdpi',
         '<(resource_packaged_apk_path)-xxhdpi',
+        '<(resource_packaged_apk_path)-xxxhdpi',
         '<(resource_packaged_apk_path)-tvdpi',
       ],
       'outputs': [
         '<(base_output_path)-density-hdpi.apk',
         '<(base_output_path)-density-xhdpi.apk',
         '<(base_output_path)-density-xxhdpi.apk',
+        '<(base_output_path)-density-xxxhdpi.apk',
         '<(base_output_path)-density-tvdpi.apk',
       ],
       'action': [
-        '--densities=hdpi,xhdpi,xxhdpi,tvdpi',
+        '--densities=hdpi,xhdpi,xxhdpi,xxxhdpi,tvdpi',
       ],
     }],
     # TODO(agrieve): Implement language splits
     ['language_splits == 1', {
       'message': 'Signing/aligning <(_target_name) language splits',
       'inputs': [
       ],
       'outputs': [
       ],
     }],
   ],
 }