[Android] Enable lint warnings by default.

build/android/gyp/lint.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2013 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.
 
 """Runs Android's lint tool."""
 
 
 import optparse
@@ skipping 37 matching lines @@
 
     with open(result_path, 'wb') as f:
       f.write(content)
 
   def _ParseAndShowResultFile():
     dom = minidom.parse(result_path)
     issues = dom.getElementsByTagName('issue')
     print >> sys.stderr
     for issue in issues:
       issue_id = issue.attributes['id'].value
-      severity = issue.attributes['severity'].value
       message = issue.attributes['message'].value
       location_elem = issue.getElementsByTagName('location')[0]
       path = location_elem.attributes['file'].value
       line = location_elem.getAttribute('line')
       if line:
-        error = '%s:%s %s: %s [%s]' % (path, line, severity, message,
-                                       issue_id)
+        error = '%s:%s %s: %s [warning]' % (path, line, message, issue_id)
       else:
         # Issues in class files don't have a line number.
-        error = '%s %s: %s [%s]' % (path, severity, message, issue_id)
+        error = '%s %s: %s [warning]' % (path, message, issue_id)
       print >> sys.stderr, error
       for attr in ['errorLine1', 'errorLine2']:
         error_line = issue.getAttribute(attr)
         if error_line:
           print >> sys.stderr, error_line
     return len(issues)
 
   _ProcessConfigFile()
 
   cmd = [
@@ skipping 71 matching lines @@
                   options.product_dir, src_dirs, options.classes_dir)
 
   if options.stamp and not rc:
     build_utils.Touch(options.stamp)
 
   return rc
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))