Enable presubmit pylint in build/android.

build/android/pylib/utils/reraiser_thread.py

Index: build/android/pylib/utils/reraiser_thread.py
diff --git a/build/android/pylib/utils/reraiser_thread.py b/build/android/pylib/utils/reraiser_thread.py
index d4ba781a32d856def495f44499ce123cd94d9fc0..eed72c173ead636d8397a174ef3a92757f43e596 100644
--- a/build/android/pylib/utils/reraiser_thread.py
+++ b/build/android/pylib/utils/reraiser_thread.py
@@ -3,14 +3,14 @@
 # found in the LICENSE file.
 
 """Thread and ThreadGroup that reraise exceptions on the main thread."""
+# pylint: disable=W0212
 
 import logging
 import sys
 import threading
-import time
 import traceback
 
-import watchdog_timer
+from pylib.utils import watchdog_timer
 
 
 class TimeoutError(Exception):
@@ -38,7 +38,7 @@ def LogThreadStack(thread):
 class ReraiserThread(threading.Thread):
   """Thread class that can reraise exceptions."""
 
-  def __init__(self, func, args=[], kwargs={}, name=None):
+  def __init__(self, func, args=None, kwargs=None, name=None):
     """Initialize thread.
 
     Args:
@@ -48,6 +48,10 @@ class ReraiserThread(threading.Thread):
       name: thread name, defaults to Thread-N.
     """
     super(ReraiserThread, self).__init__(name=name)
+    if not args:
+      args = []
+    if not kwargs:
+      kwargs = {}
     self.daemon = True
     self._func = func
     self._args = args
@@ -72,12 +76,14 @@ class ReraiserThread(threading.Thread):
 class ReraiserThreadGroup(object):
   """A group of ReraiserThread objects."""
 
-  def __init__(self, threads=[]):
+  def __init__(self, threads=None):
     """Initialize thread group.
 
     Args:
       threads: a list of ReraiserThread objects; defaults to empty.
     """
+    if not threads:
+      threads = []
     self._threads = threads
 
   def Add(self, thread):