android: Fix input list for jni_registration_generator.py

base/android/jni_generator/jni_registration_generator.py

 #!/usr/bin/env python
 # Copyright 2017 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.
 
 """Generate JNI registration entry points
 
 Creates a header file with two static functions: RegisterMainDexNatives() and
 RegisterNonMainDexNatives(). Together, these will use manual JNI registration
 to register all native methods that exist within an application."""
@@ skipping 143 matching lines @@
                           help='A list of .sources files which contain Java '
                           'file paths. Must be used with --output.')
   arg_parser.add_argument('--output',
                           help='The output file path.')
   arg_parser.add_argument('--no_register_java',
                           help='A list of Java files which should be ignored '
                           'by the parser.')
   args = arg_parser.parse_args(build_utils.ExpandFileArgs(argv[1:]))
   args.sources_files = build_utils.ParseGnList(args.sources_files)
 
-  if args.sources_files:
-    java_file_paths = []
-    for f in args.sources_files:
-      # java_file_paths stores each Java file path as a string.
-      java_file_paths += build_utils.ReadSourcesList(f)
-  else:
+  if not args.sources_files:
     print '\nError: Must specify --sources_files.'
     return 1
+
+  java_file_paths = []
+  for f in args.sources_files:
+    # java_file_paths stores each Java file path as a string.
+    java_file_paths += build_utils.ReadSourcesList(f)
   output_file = args.output
   GenerateJNIHeader(java_file_paths, output_file, args)
 
   if args.depfile:
-    build_utils.WriteDepfile(args.depfile, output_file)
+    build_utils.WriteDepfile(args.depfile, output_file,
+                             args.sources_files + java_file_paths)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))