[Android] Switch KillAll, StartActivity, and BroadcastIntent to DeviceUtils.

tools/android/mempressure.py

 #!/usr/bin/env python
 # Copyright 2013 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 collections
 import logging
 import optparse
 import os
 import sys
@@ skipping 80 matching lines @@
     device.EnableRoot()
   except device_errors.CommandFailedError as e:
     # Try to change the flags and start the activity anyway.
     # TODO(jbudorick) Handle this exception appropriately after interface
     #                 conversions are finished.
     logging.error(str(e))
   flags = flag_changer.FlagChanger(device, package_info.cmdline_file)
   if ENABLE_TEST_INTENTS_FLAG not in flags.Get():
     flags.AddFlags([ENABLE_TEST_INTENTS_FLAG])
 
-  device.old_interface.StartActivity(package, activity, action=action)
+  device.StartActivity(intent.Intent(package=package, activity=activity,
+                                     action=action))
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))