[Android] Fix KillHostHeartbeat for numerical user IDs.

build/android/provision_devices.py

 #!/usr/bin/env python
 #
 # Copyright (c) 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.
 
 """Provisions Android devices with settings required for bots.
 
 Usage:
   ./provision_devices.py [-d <device serial number>]
@@ skipping 18 matching lines @@
 sys.path.append(os.path.join(constants.DIR_SOURCE_ROOT,
                              'third_party', 'android_testrunner'))
 import errors
 
 def KillHostHeartbeat():
   ps = subprocess.Popen(['ps', 'aux'], stdout = subprocess.PIPE)
   stdout, _ = ps.communicate()
   matches = re.findall('\\n.*host_heartbeat.*', stdout)
   for match in matches:
     logging.info('An instance of host heart beart running... will kill')
-    pid = re.findall('(\d+)', match)[0]
+    pid = re.findall('(\S+)', match)[1]
     subprocess.call(['kill', str(pid)])
 
 
 def LaunchHostHeartbeat():
   # Kill if existing host_heartbeat
   KillHostHeartbeat()
   # Launch a new host_heartbeat
   logging.info('Spawning host heartbeat...')
   subprocess.Popen([os.path.join(constants.DIR_SOURCE_ROOT,
                                  'build/android/host_heartbeat.py')])
@@ skipping 241 matching lines @@
 
   if args:
     print >> sys.stderr, 'Unused args %s' % args
     return 1
 
   ProvisionDevices(options)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))