Enable presubmit pylint in build/android.

build/android/pylib/chrome_test_server_spawner.py

Index: build/android/pylib/chrome_test_server_spawner.py
diff --git a/build/android/pylib/chrome_test_server_spawner.py b/build/android/pylib/chrome_test_server_spawner.py
index 642e5223eaf6df06575b64f91a25e9e9bf316ac6..43405876a1f86b0d5f03bd098d268a35963339f0 100644
--- a/build/android/pylib/chrome_test_server_spawner.py
+++ b/build/android/pylib/chrome_test_server_spawner.py
@@ -7,6 +7,7 @@
 It's used to accept requests from the device to spawn and kill instances of the
 chrome test server on the host.
 """
+# pylint: disable=W0702
 
 import BaseHTTPServer
 import json
@@ -20,11 +21,12 @@ import threading
 import time
 import urlparse
 
-import constants
-import ports
+from pylib import constants
+from pylib import ports
 
 from pylib.forwarder import Forwarder
 
+
 # Path that are needed to import necessary modules when launching a testserver.
 os.environ['PYTHONPATH'] = os.environ.get('PYTHONPATH', '') + (':%s:%s:%s:%s:%s'
     % (os.path.join(constants.DIR_SOURCE_ROOT, 'third_party'),
@@ -54,7 +56,7 @@ def _WaitUntil(predicate, max_attempts=5):
     Whether the provided predicate was satisfied once (before the timeout).
   """
   sleep_time_sec = 0.025
-  for attempt in xrange(1, max_attempts):
+  for _ in xrange(1, max_attempts):
     if predicate():
       return True
     time.sleep(sleep_time_sec)
@@ -126,6 +128,7 @@ class TestServerThread(threading.Thread):
     # Anonymous pipe in order to get port info from test server.
     self.pipe_in = None
     self.pipe_out = None
+    self.process = None
     self.command_line = []
 
   def _WaitToStartAndGetPortFromTestServer(self):