[Android] Do not fail the build due to lint issues.

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 58 matching lines @@
       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 = [
-      lint_path, '-Werror', '--exitcode', '--showall',
+      lint_path, '--nowarn', '--exitcode', '--showall',
       '--config', _RelativizePath(processed_config_path),
       '--classpath', _RelativizePath(classes_dir),
       '--xml', _RelativizePath(result_path),
   ]
   for src in src_dirs:
     cmd.extend(['--sources', _RelativizePath(src)])
   cmd.append(_RelativizePath(os.path.join(manifest_path, os.pardir)))
 
   if os.path.exists(result_path):
     os.remove(result_path)
@@ skipping 13 matching lines @@
              ' - Wanna suppress these issues?\n'
              '    1. Read comment in %s\n'
              '    2. Run "python %s %s"\n' %
              (num_issues,
               _RelativizePath(result_path),
               _RelativizePath(config_path),
               _RelativizePath(os.path.join(_SRC_ROOT, 'build', 'android',
                                            'lint', 'suppress.py')),
               _RelativizePath(result_path)))
       print >> sys.stderr, msg
-      return 1
+      # Lint errors do not fail the build.
+      return 0
 
   return 0
 
 
 def main(argv):
   parser = optparse.OptionParser()
   parser.add_option('--lint-path', help='Path to lint executable.')
   parser.add_option('--config-path', help='Path to lint suppressions file.')
   parser.add_option('--processed-config-path',
                     help='Path to processed lint suppressions file.')
@@ skipping 25 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))