Use logdog butler subcommand to run tests.

build/android/test_runner.py

Index: build/android/test_runner.py
diff --git a/build/android/test_runner.py b/build/android/test_runner.py
index 08ec868e2b55155acc85e226f9088fae6134bda1..239f55b2988bdcbabbaeca73108bf3fafa19970d 100755
--- a/build/android/test_runner.py
+++ b/build/android/test_runner.py
@@ -12,6 +12,7 @@ import contextlib
 import itertools
 import logging
 import os
+import shutil
 import signal
 import sys
 import threading
@@ -36,6 +37,7 @@ from pylib.base import test_run_factory
 from pylib.constants import host_paths
 from pylib.results import json_results
 from pylib.results import report_results
+from pylib.utils import logdog_helper

[dnj, 2017/02/28 18:28:38]

Don't know what this is. Why not just use the logdog library directly?

[BigBossZhiling, 2017/02/28 22:35:47]

This is a really simple wrapper written by Michael Case that does almost
nothing, except setting up the sys.path variables to include swarming_client
directory where the logdog butler is. But I don't have to change the sys.path
variable anymore and the helper create the stream_client for me.

Here is the file:
https://codesearch.chromium.org/chromium/src/build/android/pylib/utils/logdog...

 
 from py_utils import contextlib_ext
 
@@ -115,6 +117,9 @@ def AddCommonOptions(parser):
                      help='Path to save test_runner trace data to. This option '
                           'has been implemented for gtest, instrumentation '
                           'test and perf test.')
+  group.add_argument('--unified-logcats-file',
+                     dest='unified_logcats_file',
+                     help='The logcat file to upload to logdog.')
 
   logcat_output_group = group.add_mutually_exclusive_group()
   logcat_output_group.add_argument(
@@ -774,6 +779,10 @@ def RunTestsInPlatformMode(args):
                        str(all_pass),
                        str(tot_tests),
                        str(iteration_count))
+  if args.unified_logcats_file:
+    with open(args.unified_logcats_file) as src:
+      with logdog_helper.open_text('unified_logcats') as dst:
+        shutil.copyfileobj(src, dst)
 
   if args.command == 'perf' and (args.steps or args.single_step):
     return 0