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..a03fb86ee80347ff4e10efcdc770a25dd0e40d62 100644
--- a/build/android/pylib/chrome_test_server_spawner.py
+++ b/build/android/pylib/chrome_test_server_spawner.py
@@ -20,8 +20,8 @@ import threading
 import time
 import urlparse
 
-import constants
-import ports
+from pylib import constants
+from pylib import ports
 
 from pylib.forwarder import Forwarder
 
@@ -54,7 +54,7 @@ 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 +126,7 @@ 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):