Removes files from //build that we don't need

build/android/pylib/device/device_blacklist.py

-# Copyright 2014 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 json
-import os
-import threading
-
-from pylib import constants
-_BLACKLIST_JSON = os.path.join(
-    constants.DIR_SOURCE_ROOT,
-    os.environ.get('CHROMIUM_OUT_DIR', 'out'),
-    'bad_devices.json')
-
-# Note that this only protects against concurrent accesses to the blacklist
-# within a process.
-_blacklist_lock = threading.RLock()
-
-def ReadBlacklist():
-  """Reads the blacklist from the _BLACKLIST_JSON file.
-
-  Returns:
-    A list containing bad devices.
-  """
-  with _blacklist_lock:
-    if not os.path.exists(_BLACKLIST_JSON):
-      return []
-
-    with open(_BLACKLIST_JSON, 'r') as f:
-      return json.load(f)
-
-
-def WriteBlacklist(blacklist):
-  """Writes the provided blacklist to the _BLACKLIST_JSON file.
-
-  Args:
-    blacklist: list of bad devices to write to the _BLACKLIST_JSON file.
-  """
-  with _blacklist_lock:
-    with open(_BLACKLIST_JSON, 'w') as f:
-      json.dump(list(set(blacklist)), f)
-
-
-def ExtendBlacklist(devices):
-  """Adds devices to _BLACKLIST_JSON file.
-
-  Args:
-    devices: list of bad devices to be added to the _BLACKLIST_JSON file.
-  """
-  with _blacklist_lock:
-    blacklist = ReadBlacklist()
-    blacklist.extend(devices)
-    WriteBlacklist(blacklist)
-
-
-def ResetBlacklist():
-  """Erases the _BLACKLIST_JSON file if it exists."""
-  with _blacklist_lock:
-    if os.path.exists(_BLACKLIST_JSON):
-      os.remove(_BLACKLIST_JSON)
-