MB: Add --quick flag for low_bandwidth_audio_test

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 1117 matching lines @@
       elif gtest_parallel:
         cmdline += gtest_parallel_wrapper
       cmdline += [
           executable,
           '--',
           '--asan=%d' % asan,
           '--msan=%d' % msan,
           '--tsan=%d' % tsan,
       ]
 
+    cmdline += isolate_map[target].get('args', [])
+
     return cmdline, extra_files
 
   def ToAbsPath(self, build_path, *comps):
     return self.PathJoin(self.src_dir,
                          self.ToSrcRelPath(build_path),
                          *comps)
 
   def ToSrcRelPath(self, path):
     """Returns a relative path from the top of the repo."""
     if path.startswith('//'):
@@ skipping 393 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:]))