[devil] Add system app replacement wrapper script.

devil/devil/android/tools/keyboard.py

Index: devil/devil/android/tools/keyboard.py
diff --git a/devil/devil/android/tools/keyboard.py b/devil/devil/android/tools/keyboard.py
index 31daf59edbf58b746fc93b77c341ef88310627e6..3a74692680c3062fd8558f5f504e1486664bc552 100755
--- a/devil/devil/android/tools/keyboard.py
+++ b/devil/devil/android/tools/keyboard.py
@@ -80,12 +80,6 @@ def Keyboard(device, stream_itr):
     pass
 
 
-def AddArguments(parser):
-  parser.add_argument('-d', '--device', action='append', dest='devices',
-                      metavar='DEVICE', help='device serial')
-  parser.add_argument('-v', '--verbose', action='count', help='print more')
-
-
 class MultipleDevicesError(base_error.BaseError):
   def __init__(self, devices):
     super(MultipleDevicesError, self).__init__(
@@ -95,7 +89,8 @@ class MultipleDevicesError(base_error.BaseError):
 def main(raw_args):
   parser = argparse.ArgumentParser(
       description="Use your keyboard as your phone's keyboard.")
-  AddArguments(parser)
+  script_common.AddDeviceArguments(parser)
+  parser.add_argument('-v', '--verbose', action='count', help='print more')
   args = parser.parse_args(raw_args)
 
   run_tests_helper.SetLogLevel(args.verbose)