[Android] Fix tombstone output when handling multiple tombstones.

build/android/tombstones.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.
 #
 # Find the most recent tombstone file(s) on all connected devices
 # and prints their stacks.
 #
 # Assumes tombstone file was created with current symbols.
@@ skipping 139 matching lines @@
   """Resolve a list of tombstones.
 
   Args:
     jobs: the number of jobs to use with multiprocess.
     tombstones: a list of tombstones.
   """
   if not tombstones:
     logging.warning('No tombstones to resolve.')
     return
   if len(tombstones) == 1:
-    data = _ResolveTombstone(tombstones[0])
+    data = [_ResolveTombstone(tombstones[0])]
   else:
     pool = multiprocessing.Pool(processes=jobs)
     data = pool.map(_ResolveTombstone, tombstones)
-  for d in data:
-    logging.info(d)
+  for tombstone in data:
+    for line in tombstone:
+      logging.info(line)
 
 
 def _GetTombstonesForDevice(device, options):
   """Returns a list of tombstones on a given device.
 
   Args:
     device: An instance of DeviceUtils.
     options: command line arguments from OptParse
   """
   ret = []
@@ skipping 66 matching lines @@
   # http://bugs.python.org/issue7980
   tombstones = []
   for device in devices:
     tombstones += _GetTombstonesForDevice(device, options)
 
   _ResolveTombstones(options.jobs, tombstones)
 
 
 if __name__ == '__main__':
   sys.exit(main())