Add failure screenshots and render test images to results detail.

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.
+"""
+
+import logging
+import os
+import sys
+import time
+
+from devil.utils import cmd_helper
+from pylib.constants import host_paths
+from pylib.utils import decorators
+
+sys.path.append(os.path.join(host_paths.DIR_SOURCE_ROOT, 'build'))
+import find_depot_tools  # pylint: disable=import-error
+
+_URL_TEMPLATE = 'https://storage.googleapis.com/%s/'
+
+
+@decorators.NoRaiseException(default_return_value='')
+def upload(name, filepath, bucket):
+  """Uploads data to Google Storage.
+
+  Args:
+    name: Name of the file on Google Storage.
+    filepath: Path to file you want to upload.
+    bucket: Bucket to upload file to.
+  """
+  gs_path = os.path.join('gs://%s/' % bucket, name)
+  logging.info('Uploading %s to %s', filepath, gs_path)
+  cmd_helper.RunCmd(
+      [os.path.join(find_depot_tools.DEPOT_TOOLS_PATH, 'gsutil.py'), 'cp',
+       filepath, gs_path])
+
+  return os.path.join(_URL_TEMPLATE % bucket, name)
+
+
+def unique_name(basename, timestamp=True, device=None):
+  """Helper function for creating a unique name for a logdog stream.
+
+  Args:
+    basename: Base of the unique name.
+    timestamp: Whether or not to add a timestamp to name.
+    device: Device to add device serial of to name.
+  """
+  return '%s%s%s' % (
+      basename,
+      '_%s' % time.strftime('%Y%m%dT%H%M%S', time.localtime())
+      if timestamp else '',
+      '_%s' % device.serial if device else '')