Add long line exception for GEN('#include') in JS browser tests.

tests/presubmit_unittest.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 presubmit_support.py and presubmit_canned_checks.py."""
 
 # pylint: disable=E1101,E1103
 
 import StringIO
@@ skipping 2161 matching lines @@
     check = lambda x, y, _: presubmit_canned_checks.CheckLongLines(x, y, 80)
     self.ContentTest(check, 'A ' * 50, 'foo.java', 'A ' * 50 + 'B', 'foo.java',
                      presubmit.OutputApi.PresubmitPromptWarning)
 
   def testCannedCheckSpecialJavaLongLines(self):
     check = lambda x, y, _: presubmit_canned_checks.CheckLongLines(x, y, 80)
     self.ContentTest(check, 'import ' + 'A ' * 150, 'foo.java',
                      'importSomething ' + 'A ' * 50, 'foo.java',
                      presubmit.OutputApi.PresubmitPromptWarning)
 
+  def testCannedCheckJSLongLines(self):
+    check = lambda x, y, _: presubmit_canned_checks.CheckLongLines(x, y, 10)
+    self.ContentTest(check, 'GEN(\'#include "c/b/ui/webui/fixture.h"\');',
+                     'foo.js', "// GEN('something');", 'foo.js',
+                     presubmit.OutputApi.PresubmitPromptWarning)
+
   def testCannedCheckObjCExceptionLongLines(self):
     check = lambda x, y, _: presubmit_canned_checks.CheckLongLines(x, y, 80)
     self.ContentTest(check, '#import ' + 'A ' * 150, 'foo.mm',
                      'import' + 'A ' * 150, 'foo.mm',
                      presubmit.OutputApi.PresubmitPromptWarning)
 
   def testCannedCheckMakefileLongLines(self):
     check = lambda x, y, _: presubmit_canned_checks.CheckLongLines(x, y, 80)
     self.ContentTest(check, 'A ' * 100, 'foo.mk', 'A ' * 100 + 'B', 'foo.mk',
                      presubmit.OutputApi.PresubmitPromptWarning)
@@ skipping 709 matching lines @@
         owners_check=False)
     self.assertEqual(1, len(results))
     self.assertEqual(
         'Found line ending with white spaces in:', results[0]._message)
     self.checkstdout('')
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()