Disable logging redirect on chromeos.

telemetry/telemetry/internal/backends/chrome/cros_browser_backend.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging
 import os
 
 from telemetry.core import exceptions
 from telemetry.core import util
 from telemetry import decorators
@@ skipping 59 matching lines @@
             # Allow devtools to connect to chrome.
             '--remote-debugging-port=%i' % self._remote_debugging_port,
             # Open a maximized window.
             '--start-maximized',
             # Disable system startup sound.
             '--ash-disable-system-sounds',
             # Ignore DMServer errors for policy fetches.
             '--allow-failed-policy-fetch-for-test',
             # Skip user image selection screen, and post login screens.
             '--oobe-skip-postlogin',
+            # Disable chrome logging redirect. crbug.com/724273.
+            '--disable-logging-redirect',
             # Debug logging.
             vmodule])
 
     # Disable GAIA services unless we're using GAIA login, or if there's an
     # explicit request for it.
     if (self.browser_options.disable_gaia_services and
         not self.browser_options.gaia_login):
       args.append('--disable-gaia-services')
 
     trace_config_file = (self.platform_backend.tracing_controller_backend
@@ skipping 178 matching lines @@
     self._WaitForBrowserToComeUp()
 
     # Wait for extensions to load.
     if self._supports_extensions:
       self._WaitForExtensionsToLoad()
 
   def _RaiseOnLoginFailure(self, error):
     if self._platform_backend.CanTakeScreenshot():
       self._cri.TakeScreenshotWithPrefix('login-screen')
     raise exceptions.LoginException(error)