WebRTC: Save logcat output to isolated outputs.

tools_webrtc/mb/mb.py

 #!/usr/bin/env python
 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """MB - the Meta-Build wrapper around GYP and GN
@@ skipping 1039 matching lines @@
                          'additional_compile_target', 'junit_test'):
       self.WriteFailureAndRaise('No command line for %s found (test type %s).'
                                 % (target, test_type), output_path=None)
 
     cmdline = []
     extra_files = []
 
     if android:
       cmdline = ['../../build/android/test_wrapper/logdog_wrapper.py',
                  '--target', target,
-                 '--logdog-bin-cmd', '../../bin/logdog_butler']
+                 '--logdog-bin-cmd', '../../bin/logdog_butler',
+                 '--logcat-output-file', '${ISOLATED_OUTDIR}/logcats',
+                 '--store-tombstones']
+
       if test_type != 'junit_test':
         cmdline += ['--target-devices-file', '${SWARMING_BOT_FILE}']
     else:
       extra_files = ['../../testing/test_env.py']
 
       # This needs to mirror the settings in //build/config/ui.gni:
       # use_x11 = is_linux && !use_ozone.
       use_x11 = is_linux and not 'use_ozone=true' in vals['gn_args']
 
       xvfb = use_x11 and test_type == 'windowed_test_launcher'
@@ skipping 469 matching lines @@
   # Then check to see if the arg contains any metacharacters other than
   # double quotes; if it does, quote everything (including the double
   # quotes) for safety.
   if any(a in UNSAFE_FOR_CMD for a in arg):
     arg = ''.join('^' + a if a in ALL_META_CHARS else a for a in arg)
   return arg
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))