Fix android depfiles to always list GN's outputs[0]

components/cronet/tools/extract_from_jars.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.
 
 import optparse
 import os
 import sys
 
@@ skipping 22 matching lines @@
   build_utils.AddDepfileOption(parser)
   parser.add_option('--classes-dir', help='Directory to extract .class files.')
   parser.add_option('--jars', help='Paths to jars to extract.')
   parser.add_option('--stamp', help='Path to touch on success.')
 
   options, _ = parser.parse_args()
 
   ExtractJars(options)
 
   if options.depfile:
-    build_utils.WriteDepfile(options.depfile,
-                             build_utils.GetPythonDependencies())
+    assert options.stamp
+    build_utils.WriteDepfile(options.depfile, options.stamp)
 
   if options.stamp:
     build_utils.Touch(options.stamp)
 
 
 if __name__ == '__main__':
   sys.exit(main())