message: Dump json output for webrtc tests using gtest_parallel.
  This is required step in order to upload tests results to ResultDB.
  Cr-Commit-Position: refs/heads/main@{#35386}
diff: @@ -133,6 +133,7 @@ def ParseArgs(argv=None):
  # These options will be passed unchanged to gtest-parallel.
  gtest_group.AddArgument('-d', '--output_dir')
  gtest_group.AddArgument('-r', '--repeat')
  + gtest_group.AddArgument('--dump_json_test_results')
  gtest_group.AddArgument('--retry_failed')
  gtest_group.AddArgument('--gtest_color')
  gtest_group.AddArgument('--gtest_filter')
  @@ -144,8 +145,8 @@ def ParseArgs(argv=None):
  # Syntax 'Nx' will be interpreted as N * number of cpu cores.
  gtest_group.AddArgument('-w', '--workers', type=_ParseWorkersOption)
  - # Needed when the test wants to store test artifacts, because it doesn't know
  - # what will be the swarming output dir.
  + # Needed when the test wants to store test artifacts, because it doesn't
  + # know what will be the swarming output dir.
  parser.add_argument('--store-test-artifacts', action='store_true')
  # No-sandbox is a Chromium-specific flag, ignore it.
  