(Reland) Use logdog butler subcommand to run tests.

build/android/pylib/local/device/local_device_instrumentation_test_run.py

Index: build/android/pylib/local/device/local_device_instrumentation_test_run.py
diff --git a/build/android/pylib/local/device/local_device_instrumentation_test_run.py b/build/android/pylib/local/device/local_device_instrumentation_test_run.py
index 1cc82f961405df3dcc7533a7ff1551c743fca76d..4eef43d61c91332bb6533e01ea49a8fe231c9d56 100644
--- a/build/android/pylib/local/device/local_device_instrumentation_test_run.py
+++ b/build/android/pylib/local/device/local_device_instrumentation_test_run.py
@@ -35,6 +35,9 @@ TIMEOUT_ANNOTATIONS = [
   ('SmallTest', 1 * 60),
 ]
 
+LOGCAT_FILTERS = ['*:e', 'chromium:v', 'cr_chromium:v',
+                  'cr_ChromiumAndroidLinker:v', 'cr_LibraryLoader:v',
+                  'cr_LinkerTest:v']
 
 # TODO(jbudorick): Make this private once the instrumentation test_runner is
 # deprecated.
@@ -291,15 +294,27 @@ class LocalDeviceInstrumentationTestRun(
           time.strftime('%Y%m%dT%H%M%S', time.localtime()),
           device.serial)
       logmon = logdog_logcat_monitor.LogdogLogcatMonitor(
-          device.adb, stream_name)
+          device.adb, stream_name, filter_specs=LOGCAT_FILTERS)
+
+      logdog_upload_start = time.time()

[jbudorick, 2017/03/17 19:20:21]

We will not want to include this timing/tracing logic in the final version of
this CL, though it's fine to have it now while we tune the iter_timeout.

[BigBossZhiling, 2017/03/20 22:09:50]

Done.

       with contextlib_ext.Optional(
-          logmon, self._test_instance.should_save_logcat):
+          trace_event.trace('%s_%s' % (test_name, 'including_logdog_upload')),
+          self._env.trace_output):
         with contextlib_ext.Optional(
-            trace_event.trace(test_name),
-            self._env.trace_output):
-          output = device.StartInstrumentation(
-              target, raw=True, extras=extras, timeout=timeout, retries=0)
+            logmon, self._test_instance.should_save_logcat):
+          with contextlib_ext.Optional(
+              trace_event.trace(test_name),
+              self._env.trace_output):
+            test_start = time.time()
+            output = device.StartInstrumentation(
+                target, raw=True, extras=extras, timeout=timeout, retries=0)
+            test_end = time.time()
       logcat_url = logmon.GetLogcatURL()
+      logdog_upload_end = time.time()
+      test_time = test_end - test_start
+      including_logdog_test_time = logdog_upload_end - logdog_upload_start
+      lag_in_logdog = including_logdog_test_time - test_time
+      logging.info('logdog_upload_affects (in second): %0.6f', lag_in_logdog)
     finally:
       device.RunShellCommand(
           ['log', '-p', 'i', '-t', _TAG, 'END %s' % test_name],