Fix python scripts in src/tools/

tools/code_coverage/croc_scan_test.py

-#!/usr/bin/python2.4
-#
-# Copyright 2009, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#        * Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-#        * Redistributions in binary form must reproduce the above
-#     copyright notice, this list of conditions and the following disclaimer
-#     in the documentation and/or other materials provided with the
-#     distribution.
-#        * Neither the name of Google Inc. nor the names of its
-#     contributors may be used to endorse or promote products derived from
-#     this software without specific prior written permission.
-#
-#     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-#     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-#     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-#     A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-#     OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-#     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-#     LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-#     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-#     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-#     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-#     OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#!/usr/bin/env python
+# Copyright (c) 2011 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.
 
 """Unit tests for croc_scan.py."""
 
-#import os
 import re
-#import sys
-#import StringIO
 import unittest
 import croc_scan
 
-#------------------------------------------------------------------------------
-
 
 class TestScanner(unittest.TestCase):
   """Tests for croc_scan.Scanner."""
 
   def testInit(self):
     """Test __init()__."""
     s = croc_scan.Scanner()
 
     self.assertEqual(s.re_token.pattern, '#')
     self.assertEqual(s.comment_to_eol, ['#'])
@@ skipping 153 matching lines @@
 
   def testScanFile(self):
     """Test ScanFile()."""
     self.assertEqual(croc_scan.ScanFile('foo', 'python'), 'scan py foo')
     self.assertEqual(croc_scan.ScanFile('bar1', 'C'), 'scan cpp bar1')
     self.assertEqual(croc_scan.ScanFile('bar2', 'C++'), 'scan cpp bar2')
     self.assertEqual(croc_scan.ScanFile('bar3', 'ObjC'), 'scan cpp bar3')
     self.assertEqual(croc_scan.ScanFile('bar4', 'ObjC++'), 'scan cpp bar4')
     self.assertEqual(croc_scan.ScanFile('bar', 'fortran'), [])
 
-#------------------------------------------------------------------------------
 
 if __name__ == '__main__':
   unittest.main()