# Copyright 2017 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import subprocess


# Command line arguments for Chrome for loading performance measurements.
CHROME_ARGS = [
  # Disable backgound network requests that may pollute WPR archive, pollute
  # HTTP cache generation, and introduce noise in loading performance.
  '--disable-background-networking',
  '--disable-default-apps',
  '--no-proxy-server',
  # Disables actions that chrome performs only on first run or each launches,
  # which can interfere with page load performance, or even block its
  # execution by waiting for user input.
  '--disable-fre',
  '--no-default-browser-check',
  '--no-first-run',
]


def ResetChromeLocalState(device, package):
  """Remove the Chrome Profile and the various disk caches."""
  profile_dirs = [
    'app_chrome/Default',
    'cache',
    'app_chrome/ShaderCache',
    'app_tabs',
  ]
  cmd = ['rm', '-rf']
  cmd.extend('/data/data/{}/{}'.format(package, d) for d in profile_dirs)
  device.adb.Shell(subprocess.list2cmdline(cmd))