Build Tools Cleanup

tools/testing/webdriver_test_setup.py

Index: tools/testing/webdriver_test_setup.py
diff --git a/tools/testing/webdriver_test_setup.py b/tools/testing/webdriver_test_setup.py
index 33a76c21d2773736dc188b709c95b60f7b6c3385..f48b02c04f7229420f35c88addb1d5f4cd3fdf38 100755
--- a/tools/testing/webdriver_test_setup.py
+++ b/tools/testing/webdriver_test_setup.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python
 
-# Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+# Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
@@ -109,7 +109,7 @@ class GoogleBasedInstaller(object):
         os_str = 'linux64'
     if self.project_name == 'chromedriver' and (
         os_str == 'mac' or os_str == 'win'):
-      os_str = os_str + '32'
+      os_str += '32'
     return os_str
 
   def run(self):