Invoke gsutil with -quiet in our test_runner scripts.

build/android/pylib/utils/google_storage_helper.py

 # Copyright 2017 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.
 
 """Helper functions to upload data to Google Storage.
 
 Text data should be streamed to logdog using |logdog_helper| module.
 Due to logdog not having image or HTML viewer, those instead should be uploaded
 to Google Storage directly using this module.
 """
@@ skipping 35 matching lines @@
     Web link to item uploaded to Google Storage bucket.
   """
   if bucket.startswith('gs://'):
     bucket = bucket[len('gs://'):]
   if bucket.endswith('/'):
     bucket = bucket[:-1]
 
   gs_path = 'gs://%s/%s' % (bucket, name)
   logging.info('Uploading %s to %s', filepath, gs_path)
 
-  cmd = [_GSUTIL_PATH]
+  cmd = [_GSUTIL_PATH, '-q']
   if content_type:
     cmd.extend(['-h', 'Content-Type:%s' % content_type])
   cmd.extend(['cp', filepath, gs_path])
 
   cmd_helper.RunCmd(cmd)
 
   url_template = _AUTHENTICATED_URL if authenticated_link else _PUBLIC_URL
   return os.path.join(url_template % bucket, name)
 
 
 def unique_name(basename, suffix='', timestamp=True, device=None):
   """Helper function for creating a unique name for a file to store in GS.
 
   Args:
     basename: Base of the unique filename.
     suffix: Suffix of filename.
     timestamp: Whether or not to add a timestamp to name.
     device: Device to add device serial of to name.
   """
   return '%s%s%s%s' % (
       basename,
       '_%s' % time.strftime('%Y_%m_%d_T%H_%M_%S-UTC', time.gmtime())
           if timestamp else '',
       '_%s' % device.serial if device else '',
       suffix)