[blink][android] Fix --adb-device in the layout test runner.

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 # Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
 # Copyright (C) 2011 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
@@ skipping 81 matching lines @@
 
     option_group_definitions.append(
         ("Printing Options", printing.print_options()))
 
     option_group_definitions.append(
         ("Android-specific Options", [
             optparse.make_option(
                 "--adb-device",
                 action="append",
                 default=[],
+                dest='adb_devices',
                 help="Run Android layout tests on these devices."),
             # FIXME: Flip this to be off by default once we can log the
             # device setup more cleanly.
             optparse.make_option(
                 "--no-android-logging",
                 dest="android_logging",
                 action="store_false",
                 default=True,
                 help=("Do not log android-specific debug messages (default is to log as part "
                       "of --debug-rwt-logging")),
@@ skipping 464 matching lines @@
             _log.debug("\t%s" % process)
 
         return run_details
 
     finally:
         printer.cleanup()
 
 if __name__ == '__main__':
     exit_code = main(sys.argv[1:], sys.stdout, sys.stderr)
     sys.exit(exit_code)